/*
* Copyright 2013 the original author or 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 org.gradle.model.internal.core.rule.describe;
import com.google.common.base.Objects;
import net.jcip.annotations.ThreadSafe;
import org.gradle.api.UncheckedIOException;
import org.gradle.internal.Factories;
import org.gradle.internal.Factory;
import java.io.IOException;
@ThreadSafe
public class SimpleModelRuleDescriptor extends AbstractModelRuleDescriptor {
private final Factory<String> factory;
public SimpleModelRuleDescriptor(final Factory<String> descriptor) {
this.factory = new Factory<String>() {
String cachedValue;
@Override
public String create() {
if (cachedValue == null) {
cachedValue = STRING_INTERNER.intern(descriptor.create());
}
return cachedValue;
}
};
}
public SimpleModelRuleDescriptor(String descriptor) {
this(Factories.constant(STRING_INTERNER.intern(descriptor)));
}
public SimpleModelRuleDescriptor(final String descriptor, final Object... args) {
this(new Factory<String>() {
@Override
public String create() {
return String.format(descriptor, args);
}
});
}
private String getDescriptor() {
return factory.create();
}
@Override
public void describeTo(Appendable appendable) {
try {
appendable.append(getDescriptor());
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
SimpleModelRuleDescriptor that = (SimpleModelRuleDescriptor) o;
return Objects.equal(getDescriptor(), that.getDescriptor());
}
@Override
public int hashCode() {
return Objects.hashCode(getDescriptor());
}
}