com.qwazr.database.store.keys.ColumnDefsKey Maven / Gradle / Ivy
/*
* Copyright 2015-2018 Emmanuel Keller / QWAZR
*
* 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.qwazr.database.store.keys;
import com.qwazr.database.model.InternalColumnDefinition;
import com.qwazr.database.store.KeyStore;
import com.qwazr.utils.CharsetUtils;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.LinkedHashMap;
import java.util.Map;
final public class ColumnDefsKey extends KeyAbstract> {
public ColumnDefsKey() {
super(KeyEnum.COLUMN_DEF, null);
}
public Map getColumns(final KeyStore store) throws IOException {
final Map map = new LinkedHashMap<>();
final byte[] prefixKey = getCachedKey();
prefixedKeys(store, 0, Integer.MAX_VALUE, (key, value) -> {
String fieldName =
CharsetUtils.decodeUtf8(ByteBuffer.wrap(key, prefixKey.length, key.length - prefixKey.length));
InternalColumnDefinition colDef = ColumnDefKey.columnInternalDefinitionByteConverter.toValue(value);
map.put(fieldName, colDef);
});
return map;
}
}