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support androidx.sqlite
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activerecord/src/androidTest/java/com/eddmash/db/ExampleInstrumentedTest.java
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activerecord/src/main/java/com/eddmash/db/SupportActiveRecord.java
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| /* | ||
| * This file is part of the com.eddmash.querer package. | ||
| * <p> | ||
| * (c) Eddilbert Macharia (http://eddmash.com)<edd.cowan@gmail.com> | ||
| * <p> | ||
| * For the full copyright and license information, please view the LICENSE | ||
| * file that was distributed with this source code. | ||
| */ | ||
| package com.eddmash.db; | ||
|
|
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| import android.database.Cursor; | ||
| import android.util.Log; | ||
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| import java.util.ArrayList; | ||
| import java.util.Arrays; | ||
| import java.util.HashMap; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
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| import androidx.sqlite.db.SupportSQLiteDatabase; | ||
| import androidx.sqlite.db.SupportSQLiteQueryBuilder; | ||
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| /** | ||
| * A simple set of helper methods to query for data on android sqlite database. | ||
| * <p> | ||
| * To get the instance of theis Active record use the getInstance method, | ||
| * this method takes just one parameter. an instance of SQLiteDatabase. | ||
| * <p> | ||
| * this class is implemented as a singleton meaning only one instance of ActiveRecord ever exists | ||
| * in your application life time. | ||
| * <p> | ||
| * NB:: the instance of SQLiteDatabase passed in getInstance method is destroyed once the garbage | ||
| * collector destroys the instance of the ActiveRecord. | ||
| */ | ||
|
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| public class SupportActiveRecord { | ||
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| private static SupportActiveRecord instance; | ||
|
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| /** | ||
| * REturn instance of SQLiteDatabase that the activerecord instance is using. | ||
| * | ||
| * @return | ||
| */ | ||
| public SupportSQLiteDatabase getDb() { | ||
| return db; | ||
| } | ||
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| private SupportSQLiteDatabase db; | ||
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| private SupportActiveRecord(SupportSQLiteDatabase database) { | ||
| db = database; | ||
| } | ||
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| /** | ||
| * Returns an instance of the the activerecord class | ||
| * | ||
| * @param database | ||
| * @return | ||
| */ | ||
| public static SupportActiveRecord getInstance(SupportSQLiteDatabase database) { | ||
| if (instance == null) { | ||
| instance = new SupportActiveRecord(database); | ||
| } | ||
| return instance; | ||
| } | ||
|
|
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| /** | ||
| * Returns an list of maps, where the map represents each record in the database. | ||
| * <p> | ||
| * with keys of the map as the column name and values of the map as the values of the | ||
| * respective columns. | ||
| * <p> | ||
| * something like this: | ||
| * <p> | ||
| * [{id:1, username:ken, age:50}, {id:2, username:matt, age:70}] | ||
| * | ||
| * @param sql | ||
| * @param args | ||
| * @return | ||
| */ | ||
| public List<Map> find(String sql, String[] args) { | ||
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| Cursor mycursor = db.query(sql, args); | ||
| HashMap map; | ||
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| List<Map> list = new ArrayList<>(); | ||
| while (mycursor.moveToNext()) { | ||
| map = new HashMap(); | ||
| for (String colName : mycursor.getColumnNames()) { | ||
| map.put(colName, mycursor.getString(mycursor.getColumnIndexOrThrow(colName))); | ||
| } | ||
| list.add(map); | ||
| } | ||
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| mycursor.close(); | ||
| return list; | ||
| } | ||
|
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| /** | ||
| * Returns an list of maps, where the map represents each record in the database. | ||
| * <p> | ||
| * with keys of the map as the column name and values of the map as the values of the | ||
| * respective columns. | ||
| * <p> | ||
| * something like this: | ||
| * <p> | ||
| * [{id:1, username:ken, age:50}, {id:2, username:matt, age:70}] | ||
| * | ||
| * @param tableName | ||
| * @param queryCols | ||
| * @return | ||
| */ | ||
| public List<Map> all(String tableName, String[] queryCols) { | ||
| Cursor mycursor = db.query(SupportSQLiteQueryBuilder.builder(tableName).columns(queryCols).create()); | ||
| HashMap map; | ||
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| if (queryCols == null) { | ||
| queryCols = mycursor.getColumnNames(); | ||
| } | ||
| Log.e(getClass().getName(), "COLS :: " + Arrays.toString(queryCols)); | ||
| List<Map> list = new ArrayList<>(); | ||
| while (mycursor.moveToNext()) { | ||
| map = new HashMap(); | ||
| for (String colName : queryCols) { | ||
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| map.put(colName, mycursor.getString(mycursor.getColumnIndexOrThrow(colName))); | ||
| } | ||
| list.add(map); | ||
| } | ||
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| mycursor.close(); | ||
| return list; | ||
| } | ||
|
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| /** | ||
| * Returns an list of maps, where the map represents each record in the database. | ||
| * <p> | ||
| * with keys of the map as the column name and values of the map as the values of the | ||
| * respective columns. | ||
| * <p> | ||
| * something like this: | ||
| * <p> | ||
| * [{id:1, username:ken, age:50}, {id:2, username:matt, age:70}] | ||
| * | ||
| * @param tableName | ||
| * @return | ||
| */ | ||
| public List<Map> all(String tableName) { | ||
| Cursor mycursor = db.query(SupportSQLiteQueryBuilder.builder(tableName).create()); | ||
| HashMap map; | ||
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| String queryCols[] = mycursor.getColumnNames(); | ||
| List<Map> list = new ArrayList<>(); | ||
| while (mycursor.moveToNext()) { | ||
| map = new HashMap(); | ||
| for (String colName : queryCols) { | ||
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| map.put(colName, mycursor.getString(mycursor.getColumnIndexOrThrow(colName))); | ||
| } | ||
| list.add(map); | ||
| } | ||
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| mycursor.close(); | ||
| return list; | ||
| } | ||
|
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| /** | ||
| * Returns value of the single column requested. | ||
| */ | ||
| public boolean exists(String tableName, String field, String value) { | ||
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| Cursor cursor = db.query(SupportSQLiteQueryBuilder.builder(tableName).selection(field, new String[]{value}).create()); | ||
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| if (cursor.getCount() <= 0) { | ||
| cursor.close(); | ||
| return false; | ||
| } | ||
| cursor.close(); | ||
| return true; | ||
| } | ||
|
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| /** | ||
| * Returns value of the single column requested. | ||
| */ | ||
| public boolean exists(String sql, String[] params) { | ||
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| Cursor cursor = db.query(sql, params); | ||
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| if (cursor.getCount() <= 0) { | ||
| cursor.close(); | ||
| return false; | ||
| } | ||
| cursor.close(); | ||
| return true; | ||
| } | ||
|
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| /** | ||
| * Returns a Map representing a single record based on the query. | ||
| * | ||
| * @param sql | ||
| * @param params parameters to bind to the query | ||
| * @return | ||
| */ | ||
| public HashMap get(String sql, String[] params) { | ||
| Cursor c = db.query(sql, params); | ||
| String selection = ""; | ||
| HashMap record = new HashMap(); | ||
| if (c.moveToFirst()) { | ||
| // we use the first column in the sql. | ||
| for (String col : c.getColumnNames()) { | ||
| record.put(col, c.getString(c.getColumnIndexOrThrow(col))); | ||
| } | ||
| } | ||
| c.close(); | ||
| return record; | ||
| } | ||
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| @Override | ||
| protected void finalize() throws Throwable { | ||
| super.finalize(); | ||
| db.close(); | ||
| } | ||
|
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| public int getScalarInt(String sql, String[] params) { | ||
| Cursor c = db.query(sql, params); | ||
| int count = -1; | ||
| if (c.moveToFirst()) { | ||
| count = c.getInt(0); | ||
| } | ||
| c.close(); | ||
|
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| return count; | ||
| } | ||
| } |
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adapter/src/androidTest/java/com/eddmash/filterableadapter/ExampleInstrumentedTest.java
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app/src/androidTest/java/com/eddmash/androidcomponents/ExampleInstrumentedTest.java
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