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/*
* Copyright (C) 2009 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License
*/
package com.android.providers.contacts;
import android.database.AbstractCursor;
import android.database.Cursor;
/**
* Cursor wrapper that reorders rows according to supplied specific position mapping.
*/
public class ReorderingCursorWrapper extends AbstractCursor {
private final Cursor mCursor;
private final int[] mPositionMap;
/**
* Constructor.
*
* @param cursor wrapped cursor
* @param positionMap maps wrapper cursor positions to wrapped cursor positions
* so that positionMap[wrapperPosition] == wrappedPosition
*/
public ReorderingCursorWrapper(Cursor cursor, int[] positionMap) {
if (cursor.getCount() != positionMap.length) {
throw new IllegalArgumentException("Cursor and position map have different sizes.");
}
mCursor = cursor;
mPositionMap = positionMap;
}
@Override
public void close() {
super.close();
mCursor.close();
}
@Override
public boolean onMove(int oldPosition, int newPosition) {
return mCursor.moveToPosition(mPositionMap[newPosition]);
}
@Override
public String[] getColumnNames() {
return mCursor.getColumnNames();
}
@Override
public int getCount() {
return mCursor.getCount();
}
@Override
public double getDouble(int column) {
return mCursor.getDouble(column);
}
@Override
public float getFloat(int column) {
return mCursor.getFloat(column);
}
@Override
public int getInt(int column) {
return mCursor.getInt(column);
}
@Override
public long getLong(int column) {
return mCursor.getLong(column);
}
@Override
public short getShort(int column) {
return mCursor.getShort(column);
}
@Override
public String getString(int column) {
return mCursor.getString(column);
}
@Override
public int getType(int column) {
return mCursor.getType(column);
}
@Override
public boolean isNull(int column) {
return mCursor.isNull(column);
}
}
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