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The Apache Cassandra Project develops a highly scalable second-generation distributed database, bringing together Dynamo's fully distributed design and Bigtable's ColumnFamily-based data model.
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.cassandra.cql3.functions.types;
import java.util.*;
import com.google.common.reflect.TypeParameter;
import com.google.common.reflect.TypeToken;
/**
* Utility methods to create {@code TypeToken} instances.
*/
public final class TypeTokens
{
private TypeTokens()
{
}
/**
* Create a {@link TypeToken} that represents a {@link List} whose elements are of the given type.
*
* @param eltType The list element type.
* @param The list element type.
* @return A {@link TypeToken} that represents a {@link List} whose elements are of the given
* type.
*/
public static TypeToken> listOf(Class eltType)
{
// @formatter:off
return new TypeToken>()
{
}.where(new TypeParameter()
{
}, eltType);
// @formatter:on
}
/**
* Create a {@link TypeToken} that represents a {@link List} whose elements are of the given type.
*
* @param eltType The list element type.
* @param The list element type.
* @return A {@link TypeToken} that represents a {@link List} whose elements are of the given
* type.
*/
public static TypeToken> listOf(TypeToken eltType)
{
// @formatter:off
return new TypeToken>()
{
}.where(new TypeParameter()
{
}, eltType);
// @formatter:on
}
/**
* Create a {@link TypeToken} that represents a {@link Set} whose elements are of the given type.
*
* @param eltType The set element type.
* @param The set element type.
* @return A {@link TypeToken} that represents a {@link Set} whose elements are of the given type.
*/
public static TypeToken> setOf(Class eltType)
{
// @formatter:off
return new TypeToken>()
{
}.where(new TypeParameter()
{
}, eltType);
// @formatter:on
}
/**
* Create a {@link TypeToken} that represents a {@link Set} whose elements are of the given type.
*
* @param eltType The set element type.
* @param The set element type.
* @return A {@link TypeToken} that represents a {@link Set} whose elements are of the given type.
*/
public static TypeToken> setOf(TypeToken eltType)
{
// @formatter:off
return new TypeToken>()
{
}.where(new TypeParameter()
{
}, eltType);
// @formatter:on
}
/**
* Create a {@link TypeToken} that represents a {@link Map} whose keys and values are of the given
* key and value types.
*
* @param keyType The map key type.
* @param valueType The map value type
* @param The map key type.
* @param The map value type
* @return A {@link TypeToken} that represents a {@link Map} whose keys and values are of the
* given key and value types
*/
public static TypeToken