com.facebook.presto.jdbc.internal.guava.collect.SingletonImmutableTable Maven / Gradle / Ivy
/*
* Copyright (C) 2009 The Guava Authors
*
* 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.facebook.presto.jdbc.internal.guava.collect;
import static com.facebook.presto.jdbc.internal.guava.base.Preconditions.checkNotNull;
import com.facebook.presto.jdbc.internal.guava.annotations.GwtCompatible;
import java.util.Map;
/**
* An implementation of {@link ImmutableTable} that holds a single cell.
*
* @author Gregory Kick
*/
@GwtCompatible
class SingletonImmutableTable extends ImmutableTable {
final R singleRowKey;
final C singleColumnKey;
final V singleValue;
SingletonImmutableTable(R rowKey, C columnKey, V value) {
this.singleRowKey = checkNotNull(rowKey);
this.singleColumnKey = checkNotNull(columnKey);
this.singleValue = checkNotNull(value);
}
SingletonImmutableTable(Cell cell) {
this(cell.getRowKey(), cell.getColumnKey(), cell.getValue());
}
@Override
public ImmutableMap column(C columnKey) {
checkNotNull(columnKey);
return containsColumn(columnKey)
? ImmutableMap.of(singleRowKey, singleValue)
: ImmutableMap.of();
}
@Override
public ImmutableMap> columnMap() {
return ImmutableMap.of(singleColumnKey, (Map) ImmutableMap.of(singleRowKey, singleValue));
}
@Override
public ImmutableMap> rowMap() {
return ImmutableMap.of(singleRowKey, (Map) ImmutableMap.of(singleColumnKey, singleValue));
}
@Override
public int size() {
return 1;
}
@Override
ImmutableSet> createCellSet() {
return ImmutableSet.of(cellOf(singleRowKey, singleColumnKey, singleValue));
}
@Override
ImmutableCollection createValues() {
return ImmutableSet.of(singleValue);
}
@Override
SerializedForm createSerializedForm() {
return SerializedForm.create(this, new int[] {0}, new int[] {0});
}
}
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