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AbstractPersistentProperty.java
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AbstractPersistentProperty.java
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/*
* Copyright 2011-2012 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.springframework.data.mapping.model;
import java.beans.PropertyDescriptor;
import java.lang.annotation.Annotation;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import org.springframework.data.annotation.Reference;
import org.springframework.data.mapping.Association;
import org.springframework.data.mapping.PersistentEntity;
import org.springframework.data.mapping.PersistentProperty;
import org.springframework.data.util.TypeInformation;
import org.springframework.util.Assert;
/**
* Simple impementation of {@link PersistentProperty}.
*
* @author Jon Brisbin
* @author Oliver Gierke
*/
public abstract class AbstractPersistentProperty<P extends PersistentProperty<P>> implements PersistentProperty<P> {
protected final String name;
protected final PropertyDescriptor propertyDescriptor;
protected final TypeInformation<?> information;
protected final Class<?> rawType;
protected final Field field;
protected final Association<P> association;
protected final PersistentEntity<?, P> owner;
private final SimpleTypeHolder simpleTypeHolder;
public AbstractPersistentProperty(Field field, PropertyDescriptor propertyDescriptor, PersistentEntity<?, P> owner,
SimpleTypeHolder simpleTypeHolder) {
Assert.notNull(field);
Assert.notNull(simpleTypeHolder);
Assert.notNull(owner);
this.name = field.getName();
this.rawType = field.getType();
this.information = owner.getTypeInformation().getProperty(this.name);
this.propertyDescriptor = propertyDescriptor;
this.field = field;
this.association = isAssociation() ? createAssociation() : null;
this.owner = owner;
this.simpleTypeHolder = simpleTypeHolder;
}
protected abstract Association<P> createAssociation();
public PersistentEntity<?, P> getOwner() {
return owner;
}
public String getName() {
return name;
}
public Class<?> getType() {
return information.getType();
}
public Class<?> getRawType() {
return this.rawType;
}
public TypeInformation<?> getTypeInformation() {
return information;
}
/*
* (non-Javadoc)
* @see org.springframework.data.mapping.PersistentProperty#getPersistentEntityType()
*/
public Iterable<? extends TypeInformation<?>> getPersistentEntityType() {
List<TypeInformation<?>> result = new ArrayList<TypeInformation<?>>();
TypeInformation<?> type = getTypeInformation();
if (isEntity()) {
result.add(type);
}
if (type.isCollectionLike() || isMap()) {
TypeInformation<?> nestedType = getTypeInformationIfNotSimpleType(getTypeInformation().getActualType());
if (nestedType != null) {
result.add(nestedType);
}
}
return result;
}
private TypeInformation<?> getTypeInformationIfNotSimpleType(TypeInformation<?> information) {
return information == null || simpleTypeHolder.isSimpleType(information.getType()) ? null : information;
}
public PropertyDescriptor getPropertyDescriptor() {
return propertyDescriptor;
}
public Field getField() {
return field;
}
public String getSpelExpression() {
return null;
}
/*
* (non-Javadoc)
* @see org.springframework.data.mapping.PersistentProperty#isTransient()
*/
public boolean isTransient() {
return false;
}
/*
* (non-Javadoc)
* @see org.springframework.data.mapping.PersistentProperty#shallBePersisted()
*/
public boolean shallBePersisted() {
return !isTransient();
}
public boolean isAssociation() {
if (field.isAnnotationPresent(Reference.class)) {
return true;
}
for (Annotation annotation : field.getDeclaredAnnotations()) {
if (annotation.annotationType().isAnnotationPresent(Reference.class)) {
return true;
}
}
return false;
}
public Association<P> getAssociation() {
return association;
}
/*
* (non-Javadoc)
* @see org.springframework.data.mapping.PersistentProperty#isCollectionLike()
*/
public boolean isCollectionLike() {
return information.isCollectionLike();
}
public boolean isMap() {
return Map.class.isAssignableFrom(getType());
}
/* (non-Javadoc)
* @see org.springframework.data.mapping.model.PersistentProperty#isArray()
*/
public boolean isArray() {
return getType().isArray();
}
/*
* (non-Javadoc)
* @see org.springframework.data.mapping.PersistentProperty#isEntity()
*/
public boolean isEntity() {
TypeInformation<?> actualType = information.getActualType();
boolean isComplexType = actualType == null ? false : !simpleTypeHolder.isSimpleType(actualType.getType());
return isComplexType && !isTransient() && !isCollectionLike() && !isMap();
}
/*
* (non-Javadoc)
* @see org.springframework.data.mapping.PersistentProperty#getComponentType()
*/
public Class<?> getComponentType() {
if (!isMap() && !isCollectionLike()) {
return null;
}
TypeInformation<?> componentType = information.getComponentType();
return componentType == null ? null : componentType.getType();
}
/* (non-Javadoc)
* @see org.springframework.data.mapping.model.PersistentProperty#getMapValueType()
*/
public Class<?> getMapValueType() {
return isMap() ? information.getMapValueType().getType() : null;
}
/*
* (non-Javadoc)
* @see java.lang.Object#equals(java.lang.Object)
*/
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (!(obj instanceof AbstractPersistentProperty)) {
return false;
}
AbstractPersistentProperty<?> that = (AbstractPersistentProperty<?>) obj;
return this.field.equals(that.field);
}
/*
* (non-Javadoc)
* @see java.lang.Object#hashCode()
*/
@Override
public int hashCode() {
return this.field.hashCode();
}
}