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org.hibernate.validator.internal.engine.path.NodeImpl Maven / Gradle / Ivy
/*
* JBoss, Home of Professional Open Source
* Copyright 2009, Red Hat, Inc. and/or its affiliates, and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* 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.hibernate.validator.internal.engine.path;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import javax.validation.ElementKind;
import javax.validation.Path;
import javax.validation.Path.BeanNode;
import javax.validation.Path.ConstructorNode;
import javax.validation.Path.CrossParameterNode;
import javax.validation.Path.MethodNode;
import javax.validation.Path.ParameterNode;
import javax.validation.Path.PropertyNode;
import javax.validation.Path.ReturnValueNode;
import org.hibernate.validator.internal.util.Contracts;
import org.hibernate.validator.internal.util.logging.Log;
import org.hibernate.validator.internal.util.logging.LoggerFactory;
/**
* Immutable implementation of a {@code Path.Node}.
*
* @author Hardy Ferentschik
* @author Gunnar Morling
*/
public class NodeImpl
implements Path.PropertyNode, Path.MethodNode, Path.ConstructorNode, Path.BeanNode, Path.ParameterNode, Path.ReturnValueNode, Path.CrossParameterNode, Serializable {
private static final long serialVersionUID = 2075466571633860499L;
private static final Log log = LoggerFactory.make();
private static final String INDEX_OPEN = "[";
private static final String INDEX_CLOSE = "]";
private static final String RETURN_VALUE_NODE_NAME = "";
private static final String CROSS_PARAMETER_NODE_NAME = "";
private final String name;
private final NodeImpl parent;
private final boolean isIterable;
private final Integer index;
private final Object key;
private final ElementKind kind;
private final int hashCode;
//type-specific attributes
private final List> parameterTypes;
private final Integer parameterIndex;
private String asString;
private NodeImpl(String name, NodeImpl parent, boolean indexable, Integer index, Object key, ElementKind kind, List> parameterTypes, Integer parameterIndex) {
this.name = name;
this.parent = parent;
this.index = index;
this.key = key;
this.isIterable = indexable;
this.kind = kind;
this.parameterTypes = parameterTypes;
this.parameterIndex = parameterIndex;
this.hashCode = buildHashCode();
}
//TODO It would be nicer if we could return PropertyNode
public static NodeImpl createPropertyNode(String name, NodeImpl parent) {
return new NodeImpl(
name,
parent,
false,
null,
null,
ElementKind.PROPERTY,
Collections.>emptyList(),
null
);
}
public static NodeImpl createParameterNode(String name, NodeImpl parent, int parameterIndex) {
return new NodeImpl(
name,
parent,
false,
null,
null,
ElementKind.PARAMETER,
Collections.>emptyList(),
parameterIndex
);
}
public static NodeImpl createCrossParameterNode(NodeImpl parent) {
return new NodeImpl(
CROSS_PARAMETER_NODE_NAME,
parent,
false,
null,
null,
ElementKind.CROSS_PARAMETER,
Collections.>emptyList(),
null
);
}
public static NodeImpl createMethodNode(String name, NodeImpl parent, List> parameterTypes) {
return new NodeImpl( name, parent, false, null, null, ElementKind.METHOD, parameterTypes, null );
}
public static NodeImpl createConstructorNode(String name, NodeImpl parent, List> parameterTypes) {
return new NodeImpl( name, parent, false, null, null, ElementKind.CONSTRUCTOR, parameterTypes, null );
}
public static NodeImpl createBeanNode(NodeImpl parent) {
return new NodeImpl(
null,
parent,
false,
null,
null,
ElementKind.BEAN,
Collections.>emptyList(),
null
);
}
public static NodeImpl createReturnValue(NodeImpl parent) {
return new NodeImpl(
RETURN_VALUE_NODE_NAME,
parent,
false,
null,
null,
ElementKind.RETURN_VALUE,
Collections.>emptyList(),
null
);
}
public static NodeImpl makeIterable(NodeImpl node) {
return new NodeImpl(
node.name,
node.parent,
true,
null,
null,
node.kind,
node.parameterTypes,
node.parameterIndex
);
}
public static NodeImpl setIndex(NodeImpl node, Integer index) {
return new NodeImpl(
node.name,
node.parent,
true,
index,
null,
node.kind,
node.parameterTypes,
node.parameterIndex
);
}
public static NodeImpl setMapKey(NodeImpl node, Object key) {
return new NodeImpl(
node.name,
node.parent,
true,
null,
key,
node.kind,
node.parameterTypes,
node.parameterIndex
);
}
@Override
public final String getName() {
return name;
}
@Override
public final boolean isInIterable() {
return parent != null && parent.isIterable();
}
public final boolean isIterable() {
return isIterable;
}
@Override
public final Integer getIndex() {
if ( parent == null ) {
return null;
}
else {
return parent.index;
}
}
@Override
public final Object getKey() {
if ( parent == null ) {
return null;
}
else {
return parent.key;
}
}
public final NodeImpl getParent() {
return parent;
}
@Override
public ElementKind getKind() {
return kind;
}
@Override
public T as(Class nodeType) {
if ( ( kind == ElementKind.BEAN && nodeType == BeanNode.class ) ||
( kind == ElementKind.CONSTRUCTOR && nodeType == ConstructorNode.class ) ||
( kind == ElementKind.CROSS_PARAMETER && nodeType == CrossParameterNode.class ) ||
( kind == ElementKind.METHOD && nodeType == MethodNode.class ) ||
( kind == ElementKind.PARAMETER && nodeType == ParameterNode.class ) ||
( kind == ElementKind.PROPERTY && nodeType == PropertyNode.class ) ||
( kind == ElementKind.RETURN_VALUE && nodeType == ReturnValueNode.class ) ) {
return nodeType.cast( this );
}
throw log.getUnableToNarrowNodeTypeException( this.getClass().getName(), kind, nodeType.getName() );
}
@Override
public List> getParameterTypes() {
return new ArrayList>( parameterTypes );
}
@Override
public int getParameterIndex() {
Contracts.assertTrue(
kind == ElementKind.PARAMETER,
"getParameterIndex() may only be invoked for nodes of ElementKind.PARAMETER."
);
return parameterIndex.intValue();
}
@Override
public String toString() {
return asString();
}
public final String asString() {
if ( asString == null ) {
asString = buildToString();
}
return asString;
}
private String buildToString() {
StringBuilder builder = new StringBuilder();
if ( ElementKind.BEAN.equals( getKind() ) ) {
// class level constraints don't contribute to path
builder.append( "" );
}
else {
builder.append( getName() );
}
if ( isIterable() ) {
builder.append( INDEX_OPEN );
if ( index != null ) {
builder.append( index );
}
else if ( key != null ) {
builder.append( key );
}
builder.append( INDEX_CLOSE );
}
return builder.toString();
}
public int buildHashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ( ( index == null ) ? 0 : index.hashCode() );
result = prime * result + ( isIterable ? 1231 : 1237 );
result = prime * result + ( ( key == null ) ? 0 : key.hashCode() );
result = prime * result + ( ( kind == null ) ? 0 : kind.hashCode() );
result = prime * result + ( ( name == null ) ? 0 : name.hashCode() );
result = prime * result + ( ( parameterIndex == null ) ? 0 : parameterIndex.hashCode() );
result = prime * result + ( ( parameterTypes == null ) ? 0 : parameterTypes.hashCode() );
result = prime * result + ( ( parent == null ) ? 0 : parent.hashCode() );
return result;
}
@Override
public int hashCode() {
return hashCode;
}
@Override
public boolean equals(Object obj) {
if ( this == obj ) {
return true;
}
if ( obj == null ) {
return false;
}
if ( getClass() != obj.getClass() ) {
return false;
}
NodeImpl other = (NodeImpl) obj;
if ( index == null ) {
if ( other.index != null ) {
return false;
}
}
else if ( !index.equals( other.index ) ) {
return false;
}
if ( isIterable != other.isIterable ) {
return false;
}
if ( key == null ) {
if ( other.key != null ) {
return false;
}
}
else if ( !key.equals( other.key ) ) {
return false;
}
if ( kind != other.kind ) {
return false;
}
if ( name == null ) {
if ( other.name != null ) {
return false;
}
}
else if ( !name.equals( other.name ) ) {
return false;
}
if ( parameterIndex == null ) {
if ( other.parameterIndex != null ) {
return false;
}
}
else if ( !parameterIndex.equals( other.parameterIndex ) ) {
return false;
}
if ( parameterTypes == null ) {
if ( other.parameterTypes != null ) {
return false;
}
}
else if ( !parameterTypes.equals( other.parameterTypes ) ) {
return false;
}
if ( parent == null ) {
if ( other.parent != null ) {
return false;
}
}
else if ( !parent.equals( other.parent ) ) {
return false;
}
return true;
}
}