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/*
* Copyright (C) 2008 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.google.common.collect.testing;
import com.google.common.annotations.GwtCompatible;
import java.util.List;
import java.util.Map;
import java.util.Set;
/**
* Creates map entries using sample keys and sample values.
*
* <p>This class is GWT compatible.
*
* @author Jesse Wilson
*/
@GwtCompatible
public abstract class TestMapEntrySetGenerator<K, V>
implements TestSetGenerator<Map.Entry<K, V>> {
private final SampleElements<K> keys;
private final SampleElements<V> values;
protected TestMapEntrySetGenerator(
SampleElements<K> keys, SampleElements<V> values) {
this.keys = keys;
this.values = values;
}
@Override
public SampleElements<Map.Entry<K, V>> samples() {
return SampleElements.mapEntries(keys, values);
}
@Override
public Set<Map.Entry<K, V>> create(Object... elements) {
Map.Entry<K, V>[] entries = createArray(elements.length);
System.arraycopy(elements, 0, entries, 0, elements.length);
return createFromEntries(entries);
}
public abstract Set<Map.Entry<K, V>> createFromEntries(
Map.Entry<K, V>[] entries);
@Override
@SuppressWarnings("unchecked") // generic arrays make typesafety sad
public Map.Entry<K, V>[] createArray(int length) {
return new Map.Entry[length];
}
/** Returns the original element list, unchanged. */
@Override
public List<Map.Entry<K, V>> order(List<Map.Entry<K, V>> insertionOrder) {
return insertionOrder;
}
}
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