mirror of
https://github.com/pierre42100/ComunicAndroid
synced 2024-11-23 13:59:29 +00:00
Fetch conversation messages remotely
This commit is contained in:
Pierre
parent
e30b3ea988
commit
6be0d241c3
@ -55,7 +55,7 @@
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<ConfirmationsSetting value="0" id="Add" />
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<ConfirmationsSetting value="0" id="Remove" />
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</component>
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<component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="true" assert-keyword="true" jdk-15="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
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<component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" default="true" assert-keyword="true" jdk-15="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
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<output url="file://$PROJECT_DIR$/build/classes" />
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</component>
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<component name="ProjectType">
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@ -1,5 +1,6 @@
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package org.communiquons.android.comunic.client.data.conversations;
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import android.support.annotation.NonNull;
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import android.support.annotation.Nullable;
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import java.util.Objects;
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@ -46,7 +47,7 @@ public class ConversationMessage {
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*
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* @param conversation_id The ID of the conversation
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*/
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public void setConversation_id(int conversation_id) {
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void setConversation_id(int conversation_id) {
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this.conversation_id = conversation_id;
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}
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@ -64,7 +65,7 @@ public class ConversationMessage {
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*
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* @param user_id The ID of the user
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*/
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public void setUser_id(int user_id) {
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void setUser_id(int user_id) {
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this.user_id = user_id;
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}
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@ -99,6 +100,19 @@ public class ConversationMessage {
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return image_path;
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}
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/**
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* Get the path of the image associated with the content
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*
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* Warning ! if no image path were specified, "null" will be returned, but as a string instead
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* of an empty pointer
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*
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* @return The path of the image
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*/
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@NonNull
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public String getImagePathNotNull() {
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return image_path != null ? image_path : "null";
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}
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/**
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* Set the content of the message
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*
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@ -122,7 +136,7 @@ public class ConversationMessage {
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*
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* @param time_insert The time of insertion of the message
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*/
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public void setTime_insert(int time_insert) {
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void setTime_insert(int time_insert) {
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this.time_insert = time_insert;
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}
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@ -0,0 +1,228 @@
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package org.communiquons.android.comunic.client.data.conversations;
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import android.content.ContentValues;
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import android.database.Cursor;
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import android.database.sqlite.SQLiteDatabase;
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import android.support.annotation.NonNull;
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import android.support.annotation.Nullable;
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import android.util.Log;
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import org.communiquons.android.comunic.client.data.DatabaseHelper;
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import org.communiquons.android.comunic.client.data.DatabaseContract.ConversationsMessagesSchema;
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import java.util.ArrayList;
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/**
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* Conversation messages database helper
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*
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* @author Pierre HUBERT
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* Created by pierre on 12/16/17.
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*/
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class ConversationMessagesDbHelper {
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/**
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* Debug tag
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*/
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private static final String TAG = "ConversationMessagesDbH";
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/**
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* Database helper object
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*/
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private DatabaseHelper dbHelper;
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/**
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* Conversations messages table name
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*/
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private static final String TABLE_NAME = ConversationsMessagesSchema.TABLE_NAME;
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/**
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* Conversation messages table column
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*/
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private final String[] columns = {
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ConversationsMessagesSchema.COLUMN_NAME_MESSAGE_ID,
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ConversationsMessagesSchema.COLUMN_NAME_CONVERSATION_ID,
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ConversationsMessagesSchema.COLUMN_NAME_USER_ID,
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ConversationsMessagesSchema.COLUMN_NAME_IMAGE_PATH,
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ConversationsMessagesSchema.COLUMN_NAME_MESSAGE,
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ConversationsMessagesSchema.COLUMN_NAME_TIME_INSERT
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};
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/**
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* Class constructor
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*
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* @param dbHelper Database helper
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*/
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ConversationMessagesDbHelper(@NonNull DatabaseHelper dbHelper){
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this.dbHelper = dbHelper;
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}
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/**
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* Get the last message stored of a conversation
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*
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* @param conversationID The ID of the target conversation
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* @return The last message of the conversation or null if no message were found
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*/
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@Nullable
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ConversationMessage getLast(int conversationID){
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ConversationMessage message = null;
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SQLiteDatabase db = dbHelper.getReadableDatabase();
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//Prepare the query on the database
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String selection = ConversationsMessagesSchema.COLUMN_NAME_CONVERSATION_ID + " = ?";
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String[] selectionArgs = {""+conversationID};
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String orderBy = ConversationsMessagesSchema.COLUMN_NAME_MESSAGE_ID + " DESC";
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String limit = "1";
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//Perform the request
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Cursor response = db.query(TABLE_NAME, columns, selection, selectionArgs, null,
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null, orderBy, limit);
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//Check for response
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if(response.getCount() != 0){
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response.moveToFirst();
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message = getMessageFromCursorPos(response);
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}
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response.close();
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db.close();
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return message;
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}
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/**
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* Insert a list of messages into the database
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*
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* @param list The list of messages to insert
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* @return The result of the operation
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*/
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boolean insertMultiple(ArrayList<ConversationMessage> list){
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SQLiteDatabase db = dbHelper.getWritableDatabase();
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boolean success = true;
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//Process the list of messages
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for(ConversationMessage message : list){
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//Try to insert the message
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if(!insertOne(db, message))
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success = false;
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}
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db.close();
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return success;
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}
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/**
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* Get an interval of messages from the database
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*
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* @param conv The conversation ID
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* @param start The ID of the oldest message to fetch
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* @param end The ID of the newest message to fetch
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* @return The list of messages | null in case of failure
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*/
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ArrayList<ConversationMessage> getInterval(int conv, int start, int end){
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SQLiteDatabase db = dbHelper.getReadableDatabase();
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//Perform a request on the database
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String selection = ConversationsMessagesSchema.COLUMN_NAME_CONVERSATION_ID + " = ? AND " +
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" " + ConversationsMessagesSchema.COLUMN_NAME_MESSAGE_ID + " >= ? AND " +
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ConversationsMessagesSchema.COLUMN_NAME_MESSAGE_ID + " <= ?";
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String[] selectionArgs = {
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""+conv,
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""+start,
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""+end
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};
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String order = ConversationsMessagesSchema.COLUMN_NAME_MESSAGE_ID;
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Cursor cur = db.query(TABLE_NAME, columns, selection, selectionArgs,
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null, null, order);
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//Process each response
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ArrayList<ConversationMessage> list = new ArrayList<>();
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cur.moveToFirst();
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while(!cur.isAfterLast()){
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list.add(getMessageFromCursorPos(cur));
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cur.moveToNext();
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}
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//Close objects
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cur.close();
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db.close();
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return list;
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}
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/**
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* Insert a single message into the database
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*
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* @param db Database object (with writeable access)
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* @param message The message to insert into the database
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* @return TRUE in case of success / FALSE else
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*/
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private boolean insertOne(SQLiteDatabase db, ConversationMessage message){
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//Perform the query
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return db.insert(TABLE_NAME, null, getContentValues(message)) != -1;
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}
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/**
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* Fill a message object based on a current cursor positin
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*
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* @param cursor The response cursor
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* @return ConversationMessage object
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*/
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private ConversationMessage getMessageFromCursorPos(Cursor cursor){
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ConversationMessage message = new ConversationMessage();
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//Query database result
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message.setId(cursor.getInt(cursor.getColumnIndexOrThrow(
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ConversationsMessagesSchema.COLUMN_NAME_MESSAGE_ID)));
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message.setConversation_id(cursor.getInt(cursor.getColumnIndexOrThrow(
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ConversationsMessagesSchema.COLUMN_NAME_CONVERSATION_ID)));
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message.setUser_id(cursor.getInt(cursor.getColumnIndexOrThrow(
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ConversationsMessagesSchema.COLUMN_NAME_USER_ID)));
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message.setImage_path(cursor.getString(cursor.getColumnIndexOrThrow(
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ConversationsMessagesSchema.COLUMN_NAME_IMAGE_PATH)));
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message.setContent(cursor.getString(cursor.getColumnIndexOrThrow(
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ConversationsMessagesSchema.COLUMN_NAME_MESSAGE)));
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message.setTime_insert(cursor.getInt(cursor.getColumnIndexOrThrow(
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ConversationsMessagesSchema.COLUMN_NAME_TIME_INSERT)));
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return message;
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}
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/**
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* Generate a ContentValue from a message object
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*
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* @param message The message to convert
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* @return The generated ContentValues
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*/
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private ContentValues getContentValues(ConversationMessage message){
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//Generate the ContentValues and return it
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ContentValues cv = new ContentValues();
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cv.put(ConversationsMessagesSchema.COLUMN_NAME_MESSAGE_ID, message.getId());
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cv.put(ConversationsMessagesSchema.COLUMN_NAME_CONVERSATION_ID,
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message.getConversation_id());
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cv.put(ConversationsMessagesSchema.COLUMN_NAME_USER_ID, message.getUser_id());
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cv.put(ConversationsMessagesSchema.COLUMN_NAME_IMAGE_PATH, message.getImagePathNotNull());
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cv.put(ConversationsMessagesSchema.COLUMN_NAME_MESSAGE, message.getContent());
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cv.put(ConversationsMessagesSchema.COLUMN_NAME_TIME_INSERT, message.getTime_insert());
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return cv;
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}
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}
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@ -0,0 +1,181 @@
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package org.communiquons.android.comunic.client.data.conversations;
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import android.content.Context;
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import android.support.annotation.Nullable;
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import android.util.Log;
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import org.communiquons.android.comunic.client.api.APIRequest;
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import org.communiquons.android.comunic.client.api.APIRequestParameters;
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import org.communiquons.android.comunic.client.api.APIResponse;
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import org.communiquons.android.comunic.client.data.DatabaseHelper;
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import org.json.JSONArray;
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import org.json.JSONException;
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import org.json.JSONObject;
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import java.util.ArrayList;
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/**
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* Conversation messages helper
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*
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* @author Pierre HUBERT
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* Created by pierre on 12/16/17.
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*/
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public class ConversationMessagesHelper {
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/**
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* Debug tag
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*/
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private static final String TAG = "ConversationMessagesHel";
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/**
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* Conversations messages database helper
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*/
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private ConversationMessagesDbHelper mDbHelper;
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/**
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* Context of execution of the application
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*/
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private Context mContext;
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/**
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* Public constructor of the helper
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*
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* @param context The context of execution of the application
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* @param dbHelper Database helper associated with the context
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*/
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public ConversationMessagesHelper(Context context, DatabaseHelper dbHelper){
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mContext = context;
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mDbHelper = new ConversationMessagesDbHelper(dbHelper);
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}
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/**
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* Get the latest messages of a conversation
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*
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* @param conversation_id The ID of the conversation to refresh
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* @return The ID of the last message available in the database
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*/
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int refresh_conversation(int conversation_id){
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//Get the ID of the last message available in the database
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int last_message_id = getLastIDFromDb(conversation_id);
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//Perform a request on the database
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ArrayList<ConversationMessage> new_messages = downloadNew(conversation_id, last_message_id);
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//Check for errors
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if(new_messages == null){
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//An error occurred
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return -1;
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}
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//Add the new messages to the database (if any)
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if(new_messages.size() > 0) {
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mDbHelper.insertMultiple(new_messages);
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}
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//Get the last message ID from database again
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return getLastIDFromDb(conversation_id);
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}
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/**
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* Fetch messages from the database
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*
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* @param conv Conversation ID
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* @param start The ID of the oldest message to fetch
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* @param end The ID of the last message to fetch
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* @return The message of the interval, or null in case of failure
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*/
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@Nullable
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ArrayList<ConversationMessage> getInDb(int conv, int start, int end){
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return mDbHelper.getInterval(conv, start, end);
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}
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/**
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* Get the ID of the last message of the conversation from the database
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*
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* @param conversation_id Target conversation
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* @return The ID of the last message available in the database or 0 in case of failure
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*/
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private int getLastIDFromDb(int conversation_id){
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//Get the id of the last message available in the database
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ConversationMessage last_message = mDbHelper.getLast(conversation_id);
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//Check if there isn't any message
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if(last_message == null)
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return 0; //There is no message in the database yet
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//Return the ID of the last message available
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else
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return last_message.getId();
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}
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/**
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* Download the latest messages available in the API
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*
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* @param conversationID The ID of the target conversation
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* @param last_message_id The ID of the last known message (0 for none)
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* @return null in case of failure, an empty array if there is no new messages available of the
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* list of new messages for the specified conversation
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*/
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@Nullable
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private ArrayList<ConversationMessage> downloadNew(int conversationID, int last_message_id){
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//Prepare a request on the API
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APIRequestParameters params = new APIRequestParameters(mContext,
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"conversations/refresh_single");
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params.addParameter("conversationID", ""+conversationID);
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params.addParameter("last_message_id", ""+last_message_id);
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ArrayList<ConversationMessage> list = new ArrayList<>();
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try {
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//Perform the request
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APIResponse response = new APIRequest().exec(params);
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//Get the list of new messages
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JSONArray messages = response.getJSONArray();
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for(int i = 0; i < messages.length(); i++){
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//Convert the message into a message object
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list.add(getMessageObject(conversationID, messages.getJSONObject(i)));
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}
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} catch (Exception e){
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Log.e(TAG, "Couldn't refresh the list of messages!");
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e.printStackTrace();
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return null;
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}
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return list;
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}
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/**
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* Convert a JSON object into a conversation message element
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*
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* @param convID The ID of the current conversation
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* @param obj The target object
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* @return Generation Conversation Message object
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* @throws JSONException If the JSON objected couldn't be decoded
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*/
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private ConversationMessage getMessageObject(int convID, JSONObject obj) throws JSONException{
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ConversationMessage message = new ConversationMessage();
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//Get the message values
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message.setId(obj.getInt("ID"));
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message.setConversation_id(convID);
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message.setUser_id(obj.getInt("ID_user"));
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message.setImage_path(obj.getString("image_path"));
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message.setContent(obj.getString("message"));
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message.setTime_insert(obj.getInt("time_insert"));
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return message;
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}
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}
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@ -0,0 +1,163 @@
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package org.communiquons.android.comunic.client.data.conversations;
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import android.content.Context;
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import android.support.annotation.NonNull;
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import android.util.Log;
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import java.util.ArrayList;
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/**
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* Runnable that refresh in the background the list of messages
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*
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* @author Pierre HUBERT
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* Created by pierre on 12/16/17.
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*/
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public class ConversationRefreshRunnable implements Runnable {
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/**
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* Debug tag
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*/
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private String TAG = "ConversationRefreshRunn";
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/**
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* The ID of the conversation
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*/
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private int conversation_id;
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/**
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* The ID of the last message available
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*/
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private int last_message_id;
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/**
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* Conversation message helper
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*/
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private ConversationMessagesHelper convMessHelper;
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/**
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* Set to true to make the thread exit
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*/
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private boolean quit = false;
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/**
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* Object that helps to make breaks between refreshes
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*/
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private final Object object = new Object();
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/**
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* Create a new conversation refresh runnable
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*
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* @param conversation_id The ID of the conversation
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* @param last_message_id The ID of the last message already present in the list (set to 0
|
||||
* for no message)
|
||||
* @param conversationMessagesHelper Conversation message helper to get access to the database
|
||||
* and to be able to query the API through helper
|
||||
*/
|
||||
public ConversationRefreshRunnable(int conversation_id, int last_message_id,
|
||||
@NonNull ConversationMessagesHelper conversationMessagesHelper){
|
||||
this.conversation_id = conversation_id;
|
||||
this.last_message_id = last_message_id;
|
||||
this.convMessHelper = conversationMessagesHelper;
|
||||
}
|
||||
|
||||
/**
|
||||
* onMessagesChangeListener
|
||||
*
|
||||
* This interface is used to perform callback actions on the UI Thread to add messages
|
||||
* to a list for example
|
||||
*
|
||||
* This method also changes in the conversations
|
||||
*/
|
||||
public interface onMessagesChangeListener {
|
||||
|
||||
/**
|
||||
* Add new messages to a previous list of messages
|
||||
*
|
||||
* @param messages The new messagess
|
||||
*/
|
||||
void onAddMessage(@NonNull ArrayList<ConversationMessage> messages);
|
||||
|
||||
/**
|
||||
* This method is called when there is not any message in the conversation
|
||||
*
|
||||
* Warning ! This method may be called several time
|
||||
*/
|
||||
void onNoMessage();
|
||||
|
||||
/**
|
||||
* This method is called when an error occur on a request on the database and / or on the
|
||||
* remote server
|
||||
*/
|
||||
void onError();
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
public void run() {
|
||||
//Log action
|
||||
Log.v(TAG, "Started conversation refresh runnable.");
|
||||
|
||||
synchronized (object) {
|
||||
//Loop that execute indefinitely until the fragment is stopped
|
||||
while (!quit) {
|
||||
|
||||
//Refresh the list of message from the server - the function return the ID of the last
|
||||
// message available
|
||||
int lastMessageInDb = convMessHelper.refresh_conversation(conversation_id);
|
||||
|
||||
//If the last message in the database is newer than the last message of the caller
|
||||
if (lastMessageInDb > last_message_id) {
|
||||
|
||||
//Fetch all the messages available in the database since the last request
|
||||
ArrayList<ConversationMessage> newMessages = convMessHelper.getInDb(
|
||||
conversation_id,
|
||||
last_message_id + 1,
|
||||
lastMessageInDb
|
||||
);
|
||||
|
||||
//Check for errors
|
||||
if(newMessages == null){
|
||||
|
||||
//Callback : an error occurred.
|
||||
Log.e(TAG, "Couldn't get the list of new messages from local database !");
|
||||
|
||||
}
|
||||
else {
|
||||
//Use the callback to send the messages to the UI thread
|
||||
for(ConversationMessage message: newMessages)
|
||||
Log.v(TAG, "Message: " + message.getContent());
|
||||
|
||||
//Update the ID of the last message fetched
|
||||
last_message_id = lastMessageInDb;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
if(lastMessageInDb == -1){
|
||||
|
||||
//Callback : an error occurred
|
||||
Log.e(TAG, "Couldn't get the list of new messages !");
|
||||
|
||||
}
|
||||
|
||||
//Make a small break
|
||||
try {
|
||||
object.wait(500);
|
||||
} catch (InterruptedException e) {
|
||||
e.printStackTrace();
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
Log.v(TAG, "Stopped conversation refresh runnable.");
|
||||
}
|
||||
|
||||
/**
|
||||
* Make the thread quit safely (does not interrupt currently running operation)
|
||||
*/
|
||||
public void quitSafely(){
|
||||
quit = true;
|
||||
}
|
||||
}
|
||||
@ -9,6 +9,12 @@ import android.view.ViewGroup;
|
||||
import android.widget.Toast;
|
||||
|
||||
import org.communiquons.android.comunic.client.R;
|
||||
import org.communiquons.android.comunic.client.data.DatabaseHelper;
|
||||
import org.communiquons.android.comunic.client.data.conversations.ConversationMessage;
|
||||
import org.communiquons.android.comunic.client.data.conversations.ConversationMessagesHelper;
|
||||
import org.communiquons.android.comunic.client.data.conversations.ConversationRefreshRunnable;
|
||||
|
||||
import java.util.ArrayList;
|
||||
|
||||
/**
|
||||
* Conversation fragment
|
||||
@ -36,11 +42,36 @@ public class ConversationFragment extends Fragment {
|
||||
*/
|
||||
private int conversation_id;
|
||||
|
||||
/**
|
||||
* The last available message id
|
||||
*/
|
||||
private int last_message_id = 0;
|
||||
|
||||
/**
|
||||
* The list of messages
|
||||
*/
|
||||
private ArrayList<ConversationMessage> messagesList;
|
||||
|
||||
/**
|
||||
* Conversation refresh runnable
|
||||
*/
|
||||
private ConversationRefreshRunnable refreshRunnable;
|
||||
|
||||
/**
|
||||
* Conversation messages helper
|
||||
*/
|
||||
private ConversationMessagesHelper convMessHelper;
|
||||
|
||||
@Override
|
||||
public void onCreate(@Nullable Bundle savedInstanceState) {
|
||||
super.onCreate(savedInstanceState);
|
||||
|
||||
//Database helper
|
||||
DatabaseHelper dbHelper = new DatabaseHelper(getActivity());
|
||||
|
||||
//Set conversation message helper
|
||||
convMessHelper = new ConversationMessagesHelper(getActivity(), dbHelper);
|
||||
|
||||
//Get the conversation ID
|
||||
conversation_id = getArguments().getInt(ARG_CONVERSATION_ID);
|
||||
|
||||
@ -52,14 +83,31 @@ public class ConversationFragment extends Fragment {
|
||||
|
||||
@Nullable
|
||||
@Override
|
||||
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {
|
||||
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container,
|
||||
Bundle savedInstanceState) {
|
||||
return inflater.inflate(R.layout.fragment_conversation, container, false);
|
||||
}
|
||||
|
||||
@Override
|
||||
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
|
||||
super.onViewCreated(view, savedInstanceState);
|
||||
}
|
||||
|
||||
Toast.makeText(getActivity(), "Open : " + conversation_id, Toast.LENGTH_SHORT).show();
|
||||
@Override
|
||||
public void onResume() {
|
||||
super.onResume();
|
||||
|
||||
refreshRunnable = new ConversationRefreshRunnable(conversation_id, last_message_id,
|
||||
convMessHelper);
|
||||
|
||||
//Create and start the thread
|
||||
new Thread(refreshRunnable).start();
|
||||
}
|
||||
|
||||
@Override
|
||||
public void onPause() {
|
||||
super.onPause();
|
||||
|
||||
refreshRunnable.quitSafely();
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user