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A light but powerful object mapper and SQL generator for Java/Android
/*
* Copyright 2017 requery.io
*
* 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 io.requery.processor;
import io.requery.PropertyNameStyle;
import javax.annotation.processing.ProcessingEnvironment;
import javax.lang.model.element.Element;
import javax.lang.model.element.ExecutableElement;
import javax.lang.model.element.TypeElement;
import javax.lang.model.type.TypeMirror;
import java.lang.annotation.Annotation;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.Set;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.function.Supplier;
/**
* Memoizes all the {@link EntityDescriptor} methods of the delegate type.
* Delegates the other methods.
*/
class EntityElementDelegate implements EntityElement {
private final EntityElement delegate;
private final Supplier generatesAdditionalTypes;
private final Supplier typeName;
private final Supplier modelName;
private final Supplier tableName;
private final Supplier classFactoryName;
private final Supplier tableAttributes;
private final Supplier tableUniqueIndexes;
private final Supplier propertyNameStyle;
private final Supplier isCacheable;
private final Supplier isCopyable;
private final Supplier isEmbedded;
private final Supplier isImmutable;
private final Supplier isReadOnly;
private final Supplier isStateless;
private final Supplier isUnimplementable;
private final Supplier isView;
private final Supplier> builderType;
private final Supplier> builderFactoryMethod;
private final Supplier> factoryMethod;
private final Supplier> factoryArguments;
EntityElementDelegate(EntityElement delegate) {
this.delegate = delegate;
generatesAdditionalTypes = memoized(delegate::generatesAdditionalTypes);
typeName = memoized(delegate::typeName);
modelName = memoized(delegate::modelName);
tableName = memoized(delegate::tableName);
classFactoryName = memoized(delegate::classFactoryName);
tableAttributes = memoized(delegate::tableAttributes);
tableUniqueIndexes = memoized(delegate::tableUniqueIndexes);
propertyNameStyle = memoized(delegate::propertyNameStyle);
isCacheable = memoized(delegate::isCacheable);
isCopyable = memoized(delegate::isCopyable);
isEmbedded = memoized(delegate::isEmbedded);
isImmutable = memoized(delegate::isImmutable);
isReadOnly = memoized(delegate::isReadOnly);
isStateless = memoized(delegate::isStateless);
isUnimplementable = memoized(delegate::isUnimplementable);
isView = memoized(delegate::isView);
builderType = memoized(delegate::builderType);
builderFactoryMethod = memoized(delegate::builderFactoryMethod);
factoryMethod = memoized(delegate::factoryMethod);
factoryArguments = memoized(delegate::factoryArguments);
}
private static MemoizedSupplier memoized(Supplier supplier) {
return new MemoizedSupplier<>(supplier);
}
private static class MemoizedSupplier implements Supplier {
private AtomicBoolean computed = new AtomicBoolean();
private Supplier supplier;
private T value;
MemoizedSupplier(Supplier supplier) {
this.supplier = supplier;
}
@Override
public T get() {
if (computed.compareAndSet(false, true)) {
value = supplier.get();
}
return value;
}
}
@Override
public void addAnnotationElement(TypeElement annotationElement, Element annotatedElement) {
delegate.addAnnotationElement(annotationElement, annotatedElement);
}
@Override
public void merge(EntityDescriptor from) {
delegate.merge(from);
}
@Override
public TypeElement element() {
return delegate.element();
}
@Override
public Set process(ProcessingEnvironment processingEnvironment) {
return delegate.process(processingEnvironment);
}
@Override
public Map, Annotation> annotations() {
return delegate.annotations();
}
@Override
public Map attributes() {
return delegate.attributes();
}
@Override
public boolean generatesAdditionalTypes() {
return generatesAdditionalTypes.get();
}
@Override
public Map listeners() {
return delegate.listeners();
}
@Override
public QualifiedName typeName() {
return typeName.get();
}
@Override
public String modelName() {
return modelName.get();
}
@Override
public String tableName() {
return tableName.get();
}
@Override
public String classFactoryName() {
return classFactoryName.get();
}
@Override
public String[] tableAttributes() {
return tableAttributes.get();
}
@Override
public String[] tableUniqueIndexes() {
return tableUniqueIndexes.get();
}
@Override
public PropertyNameStyle propertyNameStyle() {
return propertyNameStyle.get();
}
@Override
public boolean isCacheable() {
return isCacheable.get();
}
@Override
public boolean isCopyable() {
return isCopyable.get();
}
@Override
public boolean isEmbedded() {
return isEmbedded.get();
}
@Override
public boolean isImmutable() {
return isImmutable.get();
}
@Override
public boolean isReadOnly() {
return isReadOnly.get();
}
@Override
public boolean isStateless() {
return isStateless.get();
}
@Override
public boolean isUnimplementable() {
return isUnimplementable.get();
}
@Override
public boolean isView() {
return isView.get();
}
@Override
public Optional builderType() {
return builderType.get();
}
@Override
public Optional builderFactoryMethod() {
return builderFactoryMethod.get();
}
@Override
public Optional factoryMethod() {
return factoryMethod.get();
}
@Override
public List factoryArguments() {
return factoryArguments.get();
}
}