com.speedment.runtime.core.stream.action.Statement Maven / Gradle / Ivy
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A Speedment bundle that shades all dependencies into one jar. This is
useful when deploying an application on a server.
/**
*
* Copyright (c) 2006-2017, Speedment, Inc. 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 com.speedment.runtime.core.stream.action;
import java.util.HashMap;
import java.util.Map;
import java.util.Objects;
import java.util.function.Function;
import static java.util.Objects.requireNonNull;
/**
*
* @author Per Minborg
* @since 2.1.0
*/
public final class Statement {
private final Verb verb;
private final Property property;
private final static Map SINGLETONS = new HashMap<>();
private Statement(Verb verb, Property property) {
this.verb = requireNonNull(verb);
this.property = requireNonNull(property);
}
@Override
public String toString() {
return getVerb() + " " + getProperty();
}
@Override
public int hashCode() {
return Objects.hash(getVerb(), getProperty());
}
@Override
public boolean equals(Object obj) {
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
final Statement other = (Statement) obj;
if (this.getVerb() != other.getVerb()) {
return false;
}
return this.getProperty() == other.getProperty();
}
public Verb getVerb() {
return verb;
}
public Property getProperty() {
return property;
}
public static Statement of(Verb verb, Property propery) {
requireNonNull(verb);
requireNonNull(propery);
return SINGLETONS.computeIfAbsent(new Statement(verb, propery), Function.identity());
}
}