com.datastax.driver.core.TypeTokens Maven / Gradle / Ivy
/*
* Copyright DataStax, Inc.
*
* 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.datastax.driver.core;
import com.google.common.reflect.TypeParameter;
import com.google.common.reflect.TypeToken;
import java.util.List;
import java.util.Map;
import java.util.Set;
/** 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