msm8996-common: Import gps from LA.UM.6.5.r1-02500-8x96.0

Signed-off-by: Davide Garberi <dade.garberi@gmail.com>

12 files changed, 1111 insertions, 0 deletions

diff --git a/gps/core/data-items/DataItemId.h b/gps/core/data-items/DataItemId.h
new file mode 100644
index 0000000..1bf132a
--- /dev/null
+++ b/gps/core/data-items/DataItemId.h
@@ -0,0 +1,73 @@
+/* Copyright (c) 2015-2017 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef __DATAITEMID_H__
+#define __DATAITEMID_H__
+
+/**
+ * Enumeration of Data Item types
+ * When add/remove/update changes are made to Data Items, this file needs to be updated
+ * accordingly
+ */
+typedef enum e_DataItemId {
+    INVALID_DATA_ITEM_ID = -1,
+    // 0 - 4
+    AIRPLANEMODE_DATA_ITEM_ID,
+    ENH_DATA_ITEM_ID,
+    GPSSTATE_DATA_ITEM_ID,
+    NLPSTATUS_DATA_ITEM_ID,
+    WIFIHARDWARESTATE_DATA_ITEM_ID,
+    // 5 - 9
+    NETWORKINFO_DATA_ITEM_ID,
+    RILVERSION_DATA_ITEM_ID,
+    RILSERVICEINFO_DATA_ITEM_ID,
+    RILCELLINFO_DATA_ITEM_ID,
+    SERVICESTATUS_DATA_ITEM_ID,
+    // 10 - 14
+    MODEL_DATA_ITEM_ID,
+    MANUFACTURER_DATA_ITEM_ID,
+    VOICECALL_DATA_ITEM,
+    ASSISTED_GPS_DATA_ITEM_ID,
+    SCREEN_STATE_DATA_ITEM_ID,
+    // 15 - 19
+    POWER_CONNECTED_STATE_DATA_ITEM_ID,
+    TIMEZONE_CHANGE_DATA_ITEM_ID,
+    TIME_CHANGE_DATA_ITEM_ID,
+    WIFI_SUPPLICANT_STATUS_DATA_ITEM_ID,
+    SHUTDOWN_STATE_DATA_ITEM_ID,
+    // 20 - 24
+    TAC_DATA_ITEM_ID,
+    MCCMNC_DATA_ITEM_ID,
+    BTLE_SCAN_DATA_ITEM_ID,
+    BT_SCAN_DATA_ITEM_ID,
+    OEM_GTP_UPLOAD_TRIGGER_READY_ITEM_ID,
+    MAX_DATA_ITEM_ID
+} DataItemId;
+
+#endif // #ifndef __DATAITEMID_H__
diff --git a/gps/core/data-items/DataItemsFactoryProxy.cpp b/gps/core/data-items/DataItemsFactoryProxy.cpp
new file mode 100644
index 0000000..130eecf
--- /dev/null
+++ b/gps/core/data-items/DataItemsFactoryProxy.cpp
@@ -0,0 +1,99 @@
+/* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#define LOG_TAG "DataItemsFactoryProxy"
+
+#include <dlfcn.h>
+#include <DataItemId.h>
+#include <IDataItemCore.h>
+#include <DataItemsFactoryProxy.h>
+#include <platform_lib_log_util.h>
+
+namespace loc_core
+{
+void* DataItemsFactoryProxy::dataItemLibHandle = NULL;
+get_concrete_data_item_fn* DataItemsFactoryProxy::getConcreteDIFunc = NULL;
+
+IDataItemCore* DataItemsFactoryProxy::createNewDataItem(DataItemId id)
+{
+    IDataItemCore *mydi = nullptr;
+
+    if (NULL != getConcreteDIFunc) {
+        mydi = (*getConcreteDIFunc)(id);
+    }
+    else {
+        // first call to this function, symbol not yet loaded
+        if (NULL == dataItemLibHandle) {
+            LOC_LOGD("Loaded library %s",DATA_ITEMS_LIB_NAME);
+            dataItemLibHandle = dlopen(DATA_ITEMS_LIB_NAME, RTLD_NOW);
+            if (NULL == dataItemLibHandle) {
+                // dlopen failed.
+                const char * err = dlerror();
+                if (NULL == err)
+                {
+                    err = "Unknown";
+                }
+                LOC_LOGE("%s:%d]: failed to load library %s; error=%s",
+                     __func__, __LINE__, DATA_ITEMS_LIB_NAME, err);
+            }
+        }
+
+        // load sym - if dlopen handle is obtained and symbol is not yet obtained
+        if (NULL != dataItemLibHandle) {
+            getConcreteDIFunc = (get_concrete_data_item_fn * )
+                                    dlsym(dataItemLibHandle, DATA_ITEMS_GET_CONCRETE_DI);
+            if (NULL != getConcreteDIFunc) {
+                LOC_LOGD("Loaded function %s : %x",DATA_ITEMS_GET_CONCRETE_DI,getConcreteDIFunc);
+                mydi = (*getConcreteDIFunc)(id);
+            }
+            else {
+                // dlysm failed.
+                const char * err = dlerror();
+                if (NULL == err)
+                {
+                    err = "Unknown";
+                }
+                LOC_LOGE("%s:%d]: failed to find symbol %s; error=%s",
+                         __func__, __LINE__, DATA_ITEMS_GET_CONCRETE_DI, err);
+            }
+        }
+    }
+    return mydi;
+}
+
+void DataItemsFactoryProxy::closeDataItemLibraryHandle()
+{
+    if (NULL != dataItemLibHandle) {
+        dlclose(dataItemLibHandle);
+        dataItemLibHandle = NULL;
+    }
+}
+
+} // namespace loc_core
+
+
diff --git a/gps/core/data-items/DataItemsFactoryProxy.h b/gps/core/data-items/DataItemsFactoryProxy.h
new file mode 100644
index 0000000..cfd447d
--- /dev/null
+++ b/gps/core/data-items/DataItemsFactoryProxy.h
@@ -0,0 +1,55 @@
+/* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef __DATAITEMFACTORYBASE__
+#define __DATAITEMFACTORYBASE__
+
+#include <DataItemId.h>
+#include <IDataItemCore.h>
+
+namespace loc_core
+{
+
+#define DATA_ITEMS_LIB_NAME "libdataitems.so"
+#define DATA_ITEMS_GET_CONCRETE_DI "getConcreteDataItem"
+
+typedef IDataItemCore * (get_concrete_data_item_fn)(DataItemId);
+
+class DataItemsFactoryProxy {
+public:
+    static IDataItemCore* createNewDataItem(DataItemId id);
+    static void closeDataItemLibraryHandle();
+    static void *dataItemLibHandle;
+    static get_concrete_data_item_fn *getConcreteDIFunc;
+};
+
+} // namespace loc_core
+
+#endif //__DATAITEMFACTORYBASE__
+
diff --git a/gps/core/data-items/IDataItemCore.h b/gps/core/data-items/IDataItemCore.h
new file mode 100644
index 0000000..6084c92
--- /dev/null
+++ b/gps/core/data-items/IDataItemCore.h
@@ -0,0 +1,82 @@
+/* Copyright (c) 2015, 2017 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef __IDATAITEMCORE_H__
+#define __IDATAITEMCORE_H__
+
+#include <string>
+#include <DataItemId.h>
+
+namespace loc_core {
+
+using namespace std;
+
+/**
+ * @brief IDataItemCore interface.
+ * @details IDataItemCore interface.
+ *
+ */
+class IDataItemCore {
+public:
+    /**
+     * @brief Gets Data item id.
+     * @details Gets Data item id.
+     * @return Data item id.
+     */
+    virtual DataItemId getId () = 0;
+
+    /**
+     * @brief Stringify.
+     * @details Stringify.
+     *
+     * @param valueStr Reference to string.
+     */
+    virtual void stringify (string & valueStr) = 0;
+
+    /**
+     * @brief copy.
+     * @details copy.
+     *
+     * @param src Where to copy from.
+     * @param dataItemCopied Boolean flag indicated whether or not copied.
+     *
+     * @return Zero for success or non zero for failure.
+     */
+    virtual int32_t copy (IDataItemCore * src, bool *dataItemCopied = nullptr) = 0;
+
+    /**
+     * @brief Destructor.
+     * @details Destructor.
+     */
+    virtual ~IDataItemCore () {}
+};
+
+} // namespace loc_core
+
+#endif // __IDATAITEMCORE_H__
diff --git a/gps/core/data-items/common/ClientIndex.cpp b/gps/core/data-items/common/ClientIndex.cpp
new file mode 100644
index 0000000..ffb5e1d
--- /dev/null
+++ b/gps/core/data-items/common/ClientIndex.cpp
@@ -0,0 +1,171 @@
+/* Copyright (c) 2015, 2017 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#include <algorithm>
+#include <iterator>
+#include <string>
+#include <platform_lib_log_util.h>
+#include <ClientIndex.h>
+#include <IDataItemObserver.h>
+#include <DataItemId.h>
+
+using namespace std;
+using namespace loc_core;
+
+template <typename CT, typename DIT>
+inline ClientIndex <CT,DIT> :: ClientIndex () {}
+
+template <typename CT, typename DIT>
+inline ClientIndex <CT,DIT> :: ~ClientIndex () {}
+
+template <typename CT, typename DIT>
+bool ClientIndex <CT,DIT> :: isSubscribedClient (CT client) {
+    bool result = false;
+    ENTRY_LOG ();
+    typename map < CT, list <DIT> > :: iterator it =
+        mDataItemsPerClientMap.find (client);
+    if (it != mDataItemsPerClientMap.end ()) {
+        result = true;
+    }
+    EXIT_LOG_WITH_ERROR ("%d",result);
+    return result;
+}
+
+template <typename CT, typename DIT>
+void ClientIndex <CT,DIT> :: getSubscribedList (CT client, list <DIT> & out) {
+    ENTRY_LOG ();
+    typename map < CT, list <DIT> > :: iterator it =
+        mDataItemsPerClientMap.find (client);
+    if (it != mDataItemsPerClientMap.end ()) {
+        out = it->second;
+    }
+    EXIT_LOG_WITH_ERROR ("%d",0);
+}
+
+template <typename CT, typename DIT>
+int ClientIndex <CT,DIT> :: remove (CT client) {
+    int result = 0;
+    ENTRY_LOG ();
+    mDataItemsPerClientMap.erase (client);
+    EXIT_LOG_WITH_ERROR ("%d",result);
+    return result;
+}
+
+template <typename CT, typename DIT>
+void ClientIndex <CT,DIT> :: remove (const list <DIT> & r, list <CT> & out) {
+    ENTRY_LOG ();
+    typename map < CT, list <DIT> > :: iterator dicIter =
+        mDataItemsPerClientMap.begin ();
+    while (dicIter != mDataItemsPerClientMap.end()) {
+        typename list <DIT> :: const_iterator it = r.begin ();
+        for (; it != r.end (); ++it) {
+            typename list <DIT> :: iterator iter =
+                find (dicIter->second.begin (), dicIter->second.end (), *it);
+            if (iter != dicIter->second.end ()) {
+                dicIter->second.erase (iter);
+            }
+        }
+        if (dicIter->second.empty ()) {
+            out.push_back (dicIter->first);
+            // Post-increment operator increases the iterator but returns the
+            // prevous one that will be invalidated by erase()
+            mDataItemsPerClientMap.erase (dicIter++);
+        } else {
+            ++dicIter;
+        }
+    }
+    EXIT_LOG_WITH_ERROR ("%d",0);
+}
+
+template <typename CT, typename DIT>
+void ClientIndex <CT,DIT> :: remove
+(
+    CT client,
+    const list <DIT> & r,
+    list <DIT> & out
+)
+{
+    ENTRY_LOG ();
+    typename map < CT, list <DIT> > :: iterator dicIter =
+        mDataItemsPerClientMap.find (client);
+    if (dicIter != mDataItemsPerClientMap.end ()) {
+        set_intersection (dicIter->second.begin (), dicIter->second.end (),
+                         r.begin (), r.end (),
+                         inserter (out,out.begin ()));
+        if (!out.empty ()) {
+            typename list <DIT> :: iterator it = out.begin ();
+            for (; it != out.end (); ++it) {
+                dicIter->second.erase (find (dicIter->second.begin (),
+                                            dicIter->second.end (),
+                                            *it));
+            }
+        }
+        if (dicIter->second.empty ()) {
+            mDataItemsPerClientMap.erase (dicIter);
+            EXIT_LOG_WITH_ERROR ("%d",0);
+        }
+    }
+    EXIT_LOG_WITH_ERROR ("%d",0);
+}
+
+template <typename CT, typename DIT>
+void ClientIndex <CT,DIT> :: add
+(
+    CT client,
+    const list <DIT> & l,
+    list <DIT> & out
+)
+{
+    ENTRY_LOG ();
+    list <DIT> difference;
+    typename map < CT, list <DIT> > :: iterator dicIter =
+        mDataItemsPerClientMap.find (client);
+    if (dicIter != mDataItemsPerClientMap.end ()) {
+        set_difference (l.begin (), l.end (),
+                       dicIter->second.begin (), dicIter->second.end (),
+                       inserter (difference,difference.begin ()));
+        if (!difference.empty ()) {
+            difference.sort ();
+            out = difference;
+            dicIter->second.merge (difference);
+            dicIter->second.unique ();
+        }
+    } else {
+        out = l;
+        pair < CT, list <DIT> > dicnpair (client, out);
+        mDataItemsPerClientMap.insert (dicnpair);
+    }
+    EXIT_LOG_WITH_ERROR ("%d",0);
+}
+
+// Explicit instantiation must occur in same namespace where class is defined
+namespace loc_core
+{
+  template class ClientIndex <IDataItemObserver *, DataItemId>;
+  template class ClientIndex <string, DataItemId>;
+}
diff --git a/gps/core/data-items/common/ClientIndex.h b/gps/core/data-items/common/ClientIndex.h
new file mode 100644
index 0000000..feccb05
--- /dev/null
+++ b/gps/core/data-items/common/ClientIndex.h
@@ -0,0 +1,70 @@
+/* Copyright (c) 2015, 2017 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#ifndef __CLIENTINDEX_H__
+#define __CLIENTINDEX_H__
+
+#include <list>
+#include <map>
+#include <IClientIndex.h>
+
+using loc_core::IClientIndex;
+
+namespace loc_core
+{
+
+template <typename CT, typename DIT>
+
+class ClientIndex : public IClientIndex  <CT, DIT> {
+
+public:
+
+    ClientIndex ();
+
+    ~ClientIndex ();
+
+    bool isSubscribedClient (CT client);
+
+    void getSubscribedList (CT client, std :: list <DIT> & out);
+
+    int remove (CT client);
+
+    void remove (const std :: list <DIT> & r, std :: list <CT> & out);
+
+    void remove (CT client, const std :: list <DIT> & r, std :: list <DIT> & out);
+
+    void add (CT client, const std :: list <DIT> & l, std :: list <DIT> & out);
+
+private:
+    //Data members
+    std :: map < CT , std :: list <DIT> > mDataItemsPerClientMap;
+};
+
+} // namespace loc_core
+
+#endif // #ifndef __CLIENTINDEX_H__
diff --git a/gps/core/data-items/common/DataItemIndex.cpp b/gps/core/data-items/common/DataItemIndex.cpp
new file mode 100644
index 0000000..7869b43
--- /dev/null
+++ b/gps/core/data-items/common/DataItemIndex.cpp
@@ -0,0 +1,202 @@
+/* Copyright (c) 2015, 2017 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <string>
+#include <algorithm>
+#include <iterator>
+#include <DataItemIndex.h>
+#include <platform_lib_log_util.h>
+#include <IDataItemObserver.h>
+#include <DataItemId.h>
+
+using namespace std;
+using namespace loc_core;
+
+template <typename CT, typename DIT>
+inline DataItemIndex <CT,DIT> :: DataItemIndex () {}
+
+template <typename CT, typename DIT>
+inline DataItemIndex <CT,DIT> :: ~DataItemIndex () {}
+
+template <typename CT, typename DIT>
+void DataItemIndex <CT,DIT> :: getListOfSubscribedClients
+ (
+    DIT id,
+    list <CT> & out
+)
+{
+    typename map < DIT, list <CT> > :: iterator cdiIter =
+        mClientsPerDataItemMap.find (id);
+    if (cdiIter != mClientsPerDataItemMap.end ()) {
+        out = cdiIter->second;
+    }
+}
+
+
+template <typename CT, typename DIT>
+int DataItemIndex <CT,DIT> :: remove (DIT id) {
+    int result = 0;
+    ENTRY_LOG ();
+    mClientsPerDataItemMap.erase (id);
+    EXIT_LOG_WITH_ERROR ("%d",result);
+    return result;
+}
+
+template <typename CT, typename DIT>
+void DataItemIndex <CT,DIT> :: remove (const list <CT> & r, list <DIT> & out) {
+    ENTRY_LOG ();
+    typename map < DIT, list <CT> > :: iterator cdiIter =
+        mClientsPerDataItemMap.begin ();
+    while (cdiIter != mClientsPerDataItemMap.end()) {
+        typename list <CT> :: const_iterator it = r.begin ();
+        for (; it != r.end (); ++it) {
+            typename list <CT> :: iterator iter =
+                find
+                (
+                    cdiIter->second.begin (),
+                    cdiIter->second.end (),
+                    *it
+                );
+            if (iter != cdiIter->second.end ()) {
+                cdiIter->second.erase (iter);
+            }
+        }
+
+        if (cdiIter->second.empty ()) {
+            out.push_back (cdiIter->first);
+            // Post-increment operator increases the iterator but returns the
+            // prevous one that will be invalidated by erase()
+            mClientsPerDataItemMap.erase (cdiIter++);
+        } else {
+            ++cdiIter;
+        }
+    }
+    EXIT_LOG_WITH_ERROR ("%d",0);
+}
+
+template <typename CT, typename DIT>
+void DataItemIndex <CT,DIT> :: remove
+(
+    DIT id,
+    const list <CT> & r,
+    list <CT> & out
+)
+{
+    ENTRY_LOG ();
+
+    typename map < DIT, list <CT> > :: iterator cdiIter =
+        mClientsPerDataItemMap.find (id);
+    if (cdiIter != mClientsPerDataItemMap.end ()) {
+        set_intersection (cdiIter->second.begin (), cdiIter->second.end (),
+                         r.begin (), r.end (),
+                         inserter (out, out.begin ()));
+        if (!out.empty ()) {
+            typename list <CT> :: iterator it = out.begin ();
+            for (; it != out.end (); ++it) {
+                cdiIter->second.erase (find (cdiIter->second.begin (),
+                                            cdiIter->second.end (),
+                                            *it));
+            }
+        }
+        if (cdiIter->second.empty ()) {
+            mClientsPerDataItemMap.erase (cdiIter);
+            EXIT_LOG_WITH_ERROR ("%d",0);
+        }
+    }
+    EXIT_LOG_WITH_ERROR ("%d",0);
+}
+
+template <typename CT, typename DIT>
+void DataItemIndex <CT,DIT> :: add
+(
+    DIT id,
+    const list <CT> & l,
+    list <CT> & out
+)
+{
+    ENTRY_LOG ();
+    list <CT> difference;
+    typename map < DIT, list <CT> > :: iterator cdiIter =
+        mClientsPerDataItemMap.find (id);
+    if (cdiIter != mClientsPerDataItemMap.end ()) {
+        set_difference (l.begin (), l.end (),
+                       cdiIter->second.begin (), cdiIter->second.end (),
+                       inserter (difference, difference.begin ()));
+        if (!difference.empty ()) {
+            difference.sort ();
+            out = difference;
+            cdiIter->second.merge (difference);
+        }
+    } else {
+        out = l;
+        pair < DIT, list <CT> > cndipair (id, out);
+        mClientsPerDataItemMap.insert (cndipair);
+    }
+    EXIT_LOG_WITH_ERROR ("%d",0);
+}
+
+template <typename CT, typename DIT>
+void DataItemIndex <CT,DIT> :: add
+(
+    CT client,
+    const list <DIT> & l,
+    list <DIT> & out
+)
+{
+    ENTRY_LOG ();
+    typename map < DIT, list <CT> > :: iterator cdiIter;
+    typename list <DIT> :: const_iterator it = l.begin ();
+    for (; it != l.end (); ++it) {
+        cdiIter = mClientsPerDataItemMap.find (*it);
+        if (cdiIter == mClientsPerDataItemMap.end ()) {
+            out.push_back (*it);
+            pair < DIT, list <CT> > cndiPair (*it, list <CT> (1, client));
+            mClientsPerDataItemMap.insert (cndiPair);
+        } else {
+          typename list<CT> :: iterator clientIter =
+              find
+              (
+                cdiIter->second.begin (),
+                cdiIter->second.end (),
+                client
+              );
+            if (clientIter == cdiIter->second.end()) {
+              cdiIter->second.push_back (client);
+            }
+        }
+    }
+    EXIT_LOG_WITH_ERROR ("%d",0);
+}
+
+// Explicit instantiation must occur in same namespace where class is defined
+namespace loc_core
+{
+  template class DataItemIndex <IDataItemObserver *, DataItemId>;
+  template class DataItemIndex <string, DataItemId>;
+}
diff --git a/gps/core/data-items/common/DataItemIndex.h b/gps/core/data-items/common/DataItemIndex.h
new file mode 100644
index 0000000..d72e89e
--- /dev/null
+++ b/gps/core/data-items/common/DataItemIndex.h
@@ -0,0 +1,70 @@
+/* Copyright (c) 2015, 2017 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef __DATAITEMINDEX_H__
+#define __DATAITEMINDEX_H__
+
+#include <list>
+#include <map>
+#include <IDataItemIndex.h>
+
+using loc_core::IDataItemIndex;
+
+namespace loc_core
+{
+
+template <typename CT, typename DIT>
+
+class DataItemIndex : public IDataItemIndex  <CT, DIT> {
+
+public:
+
+    DataItemIndex ();
+
+    ~DataItemIndex ();
+
+    void getListOfSubscribedClients (DIT id, std :: list <CT> & out);
+
+    int remove (DIT id);
+
+    void remove (const std :: list <CT> & r, std :: list <DIT> & out);
+
+    void remove (DIT id, const std :: list <CT> & r, std :: list <CT> & out);
+
+    void add (DIT id, const std :: list <CT> & l, std :: list <CT> & out);
+
+    void add (CT client, const std :: list <DIT> & l, std :: list <DIT> & out);
+
+private:
+    std :: map < DIT, std :: list <CT> > mClientsPerDataItemMap;
+};
+
+} // namespace loc_core
+
+#endif // #ifndef __DATAITEMINDEX_H__
diff --git a/gps/core/data-items/common/IClientIndex.h b/gps/core/data-items/common/IClientIndex.h
new file mode 100644
index 0000000..0272e7b
--- /dev/null
+++ b/gps/core/data-items/common/IClientIndex.h
@@ -0,0 +1,83 @@
+/* Copyright (c) 2015, 2017 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef __ICLIENTINDEX_H__
+#define __ICLIENTINDEX_H__
+
+#include <list>
+
+namespace loc_core
+{
+
+template  <typename CT, typename DIT>
+
+class IClientIndex {
+public:
+
+    // Checks if client is subscribed
+    virtual bool isSubscribedClient (CT client) = 0;
+
+    // gets subscription list
+    virtual void getSubscribedList (CT client, std :: list <DIT> & out) = 0;
+
+    // removes an entry
+    virtual int remove (CT client) = 0;
+
+    // removes std :: list of data items and returns a list of clients
+    // removed if any.
+    virtual void remove
+    (
+        const std :: list <DIT> & r,
+        std :: list <CT> & out
+    ) = 0;
+
+    // removes list of data items indexed by client and returns list
+    // of data items removed if any.
+    virtual void remove
+    (
+        CT client,
+        const std :: list <DIT> & r,
+        std :: list <DIT> & out
+    ) = 0;
+
+    // adds/modifies entry in  map and returns new data items added.
+    virtual void add
+    (
+        CT client,
+        const std :: list <DIT> & l,
+        std :: list <DIT> & out
+    ) = 0;
+
+    // dtor
+    virtual ~IClientIndex () {}
+};
+
+} // namespace loc_core
+
+#endif // #ifndef __ICLIENTINDEX_H__
diff --git a/gps/core/data-items/common/IDataItemIndex.h b/gps/core/data-items/common/IDataItemIndex.h
new file mode 100644
index 0000000..9185582
--- /dev/null
+++ b/gps/core/data-items/common/IDataItemIndex.h
@@ -0,0 +1,94 @@
+/* Copyright (c) 2015, 2017 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef __IDATAITEMINDEX_H__
+#define __IDATAITEMINDEX_H__
+
+#include <list>
+
+namespace loc_core
+{
+
+template <typename CT, typename DIT>
+
+class IDataItemIndex {
+
+public:
+
+    // gets std :: list of subscribed clients
+    virtual void getListOfSubscribedClients
+    (
+        DIT id,
+        std :: list <CT> & out
+    ) = 0;
+
+    // removes an entry from
+    virtual int remove (DIT id) = 0;
+
+    // removes list of clients and returns a list of data items
+    // removed if any.
+    virtual void remove
+    (
+        const std :: list <CT> & r,
+        std :: list <DIT> & out
+    ) = 0;
+
+    // removes list of clients indexed by data item and returns list of
+    // clients removed if any.
+    virtual void remove
+    (
+        DIT id,
+        const std :: list <CT> & r,
+        std :: list <CT> & out
+    ) = 0;
+
+    // adds/modifies entry and returns new clients added
+    virtual void add
+    (
+        DIT id,
+        const std :: list <CT> & l,
+        std :: list <CT> & out
+    ) = 0;
+
+    // adds/modifies entry and returns yet to subscribe list of data items
+    virtual void add
+    (
+        CT client,
+        const std :: list <DIT> & l,
+        std :: list <DIT> & out
+    ) = 0;
+
+    // dtor
+    virtual ~IDataItemIndex () {}
+};
+
+} // namespace loc_core
+
+#endif // #ifndef __IDATAITEMINDEX_H__
+
diff --git a/gps/core/data-items/common/IndexFactory.cpp b/gps/core/data-items/common/IndexFactory.cpp
new file mode 100644
index 0000000..cf49475
--- /dev/null
+++ b/gps/core/data-items/common/IndexFactory.cpp
@@ -0,0 +1,64 @@
+/* Copyright (c) 2015, 2017 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <string>
+#include <IndexFactory.h>
+#include <IClientIndex.h>
+#include <ClientIndex.h>
+#include <IDataItemIndex.h>
+#include <DataItemIndex.h>
+#include <IDataItemObserver.h>
+#include <DataItemId.h>
+
+using namespace std;
+using loc_core::IClientIndex;
+using loc_core::IDataItemIndex;
+using loc_core::IDataItemObserver;
+using namespace loc_core;
+
+template <typename CT, typename DIT>
+inline IClientIndex <CT, DIT> * IndexFactory <CT, DIT> :: createClientIndex
+()
+{
+    return new (nothrow) ClientIndex <CT, DIT> ();
+}
+
+template <typename CT, typename DIT>
+inline IDataItemIndex <CT, DIT> * IndexFactory <CT, DIT> :: createDataItemIndex
+()
+{
+    return new (nothrow) DataItemIndex <CT, DIT> ();
+}
+
+// Explicit instantiation must occur in same namespace where class is defined
+namespace loc_core
+{
+  template class IndexFactory <IDataItemObserver *, DataItemId>;
+  template class IndexFactory <string, DataItemId>;
+}
diff --git a/gps/core/data-items/common/IndexFactory.h b/gps/core/data-items/common/IndexFactory.h
new file mode 100644
index 0000000..9a2070e
--- /dev/null
+++ b/gps/core/data-items/common/IndexFactory.h
@@ -0,0 +1,48 @@
+/* Copyright (c) 2015, 2017 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef __INDEXFACTORY_H__
+#define __INDEXFACTORY_H__
+
+#include <IClientIndex.h>
+#include <IDataItemIndex.h>
+
+namespace loc_core
+{
+template <typename CT, typename DIT>
+class IndexFactory {
+
+public:
+    static IClientIndex <CT, DIT> * createClientIndex ();
+    static IDataItemIndex <CT, DIT> * createDataItemIndex ();
+};
+
+} // namespace loc_core
+
+#endif // #ifndef __INDEXFACTORY_H__