/*
* Copyright (c) 2007 Mike Heath. All rights reserved.
*
* 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 org.adbcj.support;
import java.util.AbstractMap;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import org.adbcj.Field;
import org.adbcj.ResultSet;
import org.adbcj.Row;
import org.adbcj.Value;
public class DefaultRow extends AbstractMap<Object, Value> implements Row {
private final ResultSet resultSet;
private final Value[] values;
private transient Set<java.util.Map.Entry<Object, Value>> entrySet;
public DefaultRow(ResultSet resultSet, Value... values) {
this.resultSet = resultSet;
for (Value value : values) {
if (value == null) {
throw new AssertionError("Value cannot be null");
}
}
this.values = values.clone();
}
@Override
public Set<java.util.Map.Entry<Object, Value>> entrySet() {
if (entrySet == null) {
Set<java.util.Map.Entry<Object, Value>> set = new HashSet<Entry<Object,Value>>();
for (Value value : values) {
set.add(new AbstractMap.SimpleEntry<Object, Value>(value.getField(), value));
}
entrySet = Collections.unmodifiableSet(set);
}
return entrySet;
}
public ResultSet getResultSet() {
return resultSet;
}
@Override
public int size() {
return values.length;
}
@Override
public boolean containsKey(Object key) {
return resultSet.getField(key) != null;
}
@Override
public Value get(Object key) {
Field field = resultSet.getField(key);
Value value = values[field.getIndex()];
return value;
}
@Override
public Value remove(Object key) {
throw new UnsupportedOperationException("Results set rows are read-only");
}
@Override
public void clear() {
throw new UnsupportedOperationException("Results set rows are read-only");
}
public Value[] getValues() {
return values.clone();
}
}