/*
* Hibernate Validator, declare and validate application constraints
*
* License: Apache License, Version 2.0
* See the license.txt file in the root directory or <http://www.apache.org/licenses/LICENSE-2.0>.
*/
package org.hibernate.validator.internal.engine.constraintvalidation;
import static org.hibernate.validator.internal.util.CollectionHelper.newArrayList;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.validation.ClockProvider;
import javax.validation.ConstraintValidatorContext;
import javax.validation.ConstraintValidatorContext.ConstraintViolationBuilder.LeafNodeBuilderCustomizableContext;
import javax.validation.ConstraintValidatorContext.ConstraintViolationBuilder.LeafNodeBuilderDefinedContext;
import javax.validation.ConstraintValidatorContext.ConstraintViolationBuilder.LeafNodeContextBuilder;
import javax.validation.ConstraintValidatorContext.ConstraintViolationBuilder.NodeBuilderCustomizableContext;
import javax.validation.ConstraintValidatorContext.ConstraintViolationBuilder.NodeBuilderDefinedContext;
import javax.validation.ConstraintValidatorContext.ConstraintViolationBuilder.NodeContextBuilder;
import javax.validation.ElementKind;
import javax.validation.metadata.ConstraintDescriptor;
import org.hibernate.validator.constraintvalidation.HibernateConstraintValidatorContext;
import org.hibernate.validator.internal.engine.path.PathImpl;
import org.hibernate.validator.internal.util.Contracts;
import org.hibernate.validator.internal.util.logging.Log;
import org.hibernate.validator.internal.util.logging.LoggerFactory;
/**
* @author Hardy Ferentschik
* @author Gunnar Morling
* @author Guillaume Smet
*/
public class ConstraintValidatorContextImpl implements HibernateConstraintValidatorContext {
private static final Log log = LoggerFactory.make();
private Map<String, Object> messageParameters;
private Map<String, Object> expressionVariables;
private final List<String> methodParameterNames;
private final ClockProvider clockProvider;
private final List<ConstraintViolationCreationContext> constraintViolationCreationContexts = newArrayList( 3 );
private final PathImpl basePath;
private final ConstraintDescriptor<?> constraintDescriptor;
private boolean defaultDisabled;
private Object dynamicPayload;
public ConstraintValidatorContextImpl(List<String> methodParameterNames, ClockProvider clockProvider, PathImpl propertyPath,
ConstraintDescriptor<?> constraintDescriptor) {
this.methodParameterNames = methodParameterNames;
this.clockProvider = clockProvider;
this.basePath = propertyPath;
this.constraintDescriptor = constraintDescriptor;
}
@Override
public final void disableDefaultConstraintViolation() {
defaultDisabled = true;
}
@Override
public final String getDefaultConstraintMessageTemplate() {
return constraintDescriptor.getMessageTemplate();
}
@Override
public final ConstraintViolationBuilder buildConstraintViolationWithTemplate(String messageTemplate) {
return new ConstraintViolationBuilderImpl(
methodParameterNames,
messageTemplate,
PathImpl.createCopy( basePath )
);
}
@Override
public <T> T unwrap(Class<T> type) {
//allow unwrapping into public super types
if ( type.isAssignableFrom( HibernateConstraintValidatorContext.class ) ) {
return type.cast( this );
}
throw log.getTypeNotSupportedForUnwrappingException( type );
}
@Override
public HibernateConstraintValidatorContext addExpressionVariable(String name, Object value) {
Contracts.assertNotNull( name, "null is not a valid value for an expression variable name" );
if ( expressionVariables == null ) {
expressionVariables = new HashMap<>();
}
this.expressionVariables.put( name, value );
return this;
}
@Override
public HibernateConstraintValidatorContext addMessageParameter(String name, Object value) {
Contracts.assertNotNull( name, "null is not a valid value for a parameter name" );
if ( messageParameters == null ) {
messageParameters = new HashMap<>();
}
this.messageParameters.put( name, value );
return this;
}
@Override
public ClockProvider getClockProvider() {
return clockProvider;
}
@Override
public HibernateConstraintValidatorContext withDynamicPayload(Object violationContext) {
this.dynamicPayload = violationContext;
return this;
}
public final ConstraintDescriptor<?> getConstraintDescriptor() {
return constraintDescriptor;
}
public final List<ConstraintViolationCreationContext> getConstraintViolationCreationContexts() {
if ( defaultDisabled && constraintViolationCreationContexts.size() == 0 ) {
throw log.getAtLeastOneCustomMessageMustBeCreatedException();
}
List<ConstraintViolationCreationContext> returnedConstraintViolationCreationContexts = new ArrayList<>(
constraintViolationCreationContexts
);
if ( !defaultDisabled ) {
returnedConstraintViolationCreationContexts.add(
new ConstraintViolationCreationContext(
getDefaultConstraintMessageTemplate(),
basePath,
messageParameters != null ? new HashMap<>( messageParameters ) : Collections.emptyMap(),
expressionVariables != null ? new HashMap<>( expressionVariables ) : Collections.emptyMap(),
dynamicPayload
)
);
}
return returnedConstraintViolationCreationContexts;
}
public List<String> getMethodParameterNames() {
return methodParameterNames;
}
private abstract class NodeBuilderBase {
protected final String messageTemplate;
protected PathImpl propertyPath;
protected NodeBuilderBase(String template, PathImpl path) {
this.messageTemplate = template;
this.propertyPath = path;
}
public ConstraintValidatorContext addConstraintViolation() {
constraintViolationCreationContexts.add(
new ConstraintViolationCreationContext(
messageTemplate,
propertyPath,
messageParameters != null ? new HashMap<>( messageParameters ) : Collections.emptyMap(),
expressionVariables != null ? new HashMap<>( expressionVariables ) : Collections.emptyMap(),
dynamicPayload
)
);
return ConstraintValidatorContextImpl.this;
}
}
private class ConstraintViolationBuilderImpl extends NodeBuilderBase implements ConstraintViolationBuilder {
private final List<String> methodParameterNames;
private ConstraintViolationBuilderImpl(List<String> methodParameterNames, String template, PathImpl path) {
super( template, path );
this.methodParameterNames = methodParameterNames;
}
@Override
public NodeBuilderDefinedContext addNode(String name) {
dropLeafNodeIfRequired();
propertyPath.addPropertyNode( name );
return new NodeBuilder( messageTemplate, propertyPath );
}
@Override
public NodeBuilderCustomizableContext addPropertyNode(String name) {
dropLeafNodeIfRequired();
return new DeferredNodeBuilder( messageTemplate, propertyPath, name );
}
@Override
public LeafNodeBuilderCustomizableContext addBeanNode() {
return new DeferredNodeBuilder( messageTemplate, propertyPath, null );
}
@Override
public NodeBuilderDefinedContext addParameterNode(int index) {
if ( propertyPath.getLeafNode().getKind() != ElementKind.CROSS_PARAMETER ) {
throw log.getParameterNodeAddedForNonCrossParameterConstraintException( propertyPath );
}
dropLeafNodeIfRequired();
propertyPath.addParameterNode( methodParameterNames.get( index ), index );
return new NodeBuilder( messageTemplate, propertyPath );
}
/**
* In case nodes are added from within a class-level or cross-parameter
* constraint, the node representing the constraint element will be
* dropped. inIterable(), getKey() etc.
*/
private void dropLeafNodeIfRequired() {
if ( propertyPath.getLeafNode().getKind() == ElementKind.BEAN || propertyPath.getLeafNode()
.getKind() == ElementKind.CROSS_PARAMETER ) {
propertyPath = propertyPath.getPathWithoutLeafNode();
}
}
}
private class NodeBuilder extends NodeBuilderBase
implements NodeBuilderDefinedContext, LeafNodeBuilderDefinedContext {
private NodeBuilder(String template, PathImpl path) {
super( template, path );
}
@Override
@Deprecated
public ConstraintViolationBuilder.NodeBuilderCustomizableContext addNode(String name) {
return addPropertyNode( name );
}
@Override
public NodeBuilderCustomizableContext addPropertyNode(String name) {
return new DeferredNodeBuilder( messageTemplate, propertyPath, name );
}
@Override
public LeafNodeBuilderCustomizableContext addBeanNode() {
return new DeferredNodeBuilder( messageTemplate, propertyPath, null );
}
}
private class DeferredNodeBuilder extends NodeBuilderBase
implements NodeBuilderCustomizableContext, LeafNodeBuilderCustomizableContext, NodeContextBuilder, LeafNodeContextBuilder {
private final String leafNodeName;
private DeferredNodeBuilder(String template, PathImpl path, String nodeName) {
super( template, path );
this.leafNodeName = nodeName;
}
@Override
public DeferredNodeBuilder inIterable() {
propertyPath.makeLeafNodeIterable();
return this;
}
@Override
public NodeBuilder atKey(Object key) {
propertyPath.setLeafNodeMapKey( key );
addLeafNode();
return new NodeBuilder( messageTemplate, propertyPath );
}
@Override
public NodeBuilder atIndex(Integer index) {
propertyPath.setLeafNodeIndex( index );
addLeafNode();
return new NodeBuilder( messageTemplate, propertyPath );
}
@Override
@Deprecated
public NodeBuilderCustomizableContext addNode(String name) {
return addPropertyNode( name );
}
@Override
public NodeBuilderCustomizableContext addPropertyNode(String name) {
addLeafNode();
return new DeferredNodeBuilder( messageTemplate, propertyPath, name );
}
@Override
public LeafNodeBuilderCustomizableContext addBeanNode() {
addLeafNode();
return new DeferredNodeBuilder( messageTemplate, propertyPath, null );
}
@Override
public ConstraintValidatorContext addConstraintViolation() {
addLeafNode();
return super.addConstraintViolation();
}
/**
* Adds the leaf node stored for deferred addition. Either a bean or
* property node.
*/
private void addLeafNode() {
if ( leafNodeName == null ) {
propertyPath.addBeanNode();
}
else {
propertyPath.addPropertyNode( leafNodeName );
}
}
}
}