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/*******************************************************************************
* Copyright (c) 2007, 2012 Oracle. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0, which accompanies this distribution
* and is available at http://www.eclipse.org/legal/epl-v10.html.
*
* Contributors:
* Oracle - initial API and implementation
******************************************************************************/
package org.eclipse.jpt.jpa.core.internal;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.jpt.common.core.ContentTypeReference;
import org.eclipse.jpt.common.core.JptResourceType;
import org.eclipse.jpt.common.utility.transformer.Transformer;
import org.eclipse.jpt.jpa.core.JpaPlatformProvider;
import org.eclipse.jpt.jpa.core.JpaResourceModelProvider;
import org.eclipse.jpt.jpa.core.ResourceDefinition;
import org.eclipse.jpt.jpa.core.context.java.DefaultJavaAttributeMappingDefinition;
import org.eclipse.jpt.jpa.core.context.java.JavaAttributeMappingDefinition;
import org.eclipse.jpt.jpa.core.context.java.JavaTypeMappingDefinition;
import org.eclipse.jpt.jpa.core.internal.plugin.JptJpaCorePlugin;
/**
* All the state in the JPA platform should be "static" (i.e. unchanging once
* it is initialized).
*/
public abstract class AbstractJpaPlatformProvider
implements JpaPlatformProvider
{
protected ArrayList<JptResourceType> mostRecentSupportedResourceTypes;
protected ArrayList<JpaResourceModelProvider> resourceModelProviders;
protected ArrayList<JavaTypeMappingDefinition> javaTypeMappingDefinitions;
protected ArrayList<DefaultJavaAttributeMappingDefinition> defaultJavaAttributeMappingDefinitions;
protected ArrayList<JavaAttributeMappingDefinition> specifiedJavaAttributeMappingDefinitions;
protected ArrayList<ResourceDefinition> resourceDefinitions;
/**
* zero-argument constructor
*/
protected AbstractJpaPlatformProvider() {
super();
}
// ********** most recent supported resource types **********
public synchronized ArrayList<JptResourceType> getMostRecentSupportedResourceTypes() {
if (this.mostRecentSupportedResourceTypes == null) {
this.mostRecentSupportedResourceTypes = this.buildMostRecentSupportedResourceTypes();
}
return this.mostRecentSupportedResourceTypes;
}
protected ArrayList<JptResourceType> buildMostRecentSupportedResourceTypes() {
ArrayList<JptResourceType> types = new ArrayList<JptResourceType>();
this.addMostRecentSupportedResourceTypesTo(types);
this.validateMostRecentSupportedResourceTypes(types);
return types;
}
protected abstract void addMostRecentSupportedResourceTypesTo(ArrayList<JptResourceType> types);
protected void validateMostRecentSupportedResourceTypes(ArrayList<JptResourceType> resourceTypes) {
String message = "Duplicate resource types listed as most recent for content type ''{0}'': {1}"; //$NON-NLS-1$
this.validate(resourceTypes, ContentTypeReference.CONTENT_TYPE_TRANSFORMER, message);
}
// ********** resource models **********
public final synchronized Iterable<JpaResourceModelProvider> getResourceModelProviders() {
if (this.resourceModelProviders == null) {
this.resourceModelProviders = this.buildResourceModelProviders();
}
return this.resourceModelProviders;
}
protected ArrayList<JpaResourceModelProvider> buildResourceModelProviders() {
ArrayList<JpaResourceModelProvider> providers = new ArrayList<JpaResourceModelProvider>();
this.addResourceModelProvidersTo(providers);
this.validateResourceModelProviders(providers);
return providers;
}
protected abstract void addResourceModelProvidersTo(ArrayList<JpaResourceModelProvider> providers);
protected void validateResourceModelProviders(ArrayList<JpaResourceModelProvider> providers) {
String message = "Duplicate resource model providers listed for content type ''{0}'': {1}"; //$NON-NLS-1$
this.validate(providers, ContentTypeReference.CONTENT_TYPE_TRANSFORMER, message);
}
// ********** Java type mappings **********
public final synchronized Iterable<JavaTypeMappingDefinition> getJavaTypeMappingDefinitions() {
if (this.javaTypeMappingDefinitions == null) {
this.javaTypeMappingDefinitions = this.buildJavaTypeMappingDefinitions();
}
return this.javaTypeMappingDefinitions;
}
protected ArrayList<JavaTypeMappingDefinition> buildJavaTypeMappingDefinitions() {
ArrayList<JavaTypeMappingDefinition> definitions = new ArrayList<JavaTypeMappingDefinition>();
this.addJavaTypeMappingDefinitionsTo(definitions);
return definitions;
}
/**
* To the specified list, add mapping definitions to use for analyzing the
* mapping of a type given all annotations on it. The order is important,
* as once a mapping definition tests positive for a
* type, all following mapping definitions are ignored.
*/
protected abstract void addJavaTypeMappingDefinitionsTo(ArrayList<JavaTypeMappingDefinition> definitions);
// ********** Java attribute mappings **********
public final synchronized Iterable<DefaultJavaAttributeMappingDefinition> getDefaultJavaAttributeMappingDefinitions() {
if (this.defaultJavaAttributeMappingDefinitions == null) {
this.defaultJavaAttributeMappingDefinitions = this.buildDefaultJavaAttributeMappingDefinitions();
}
return this.defaultJavaAttributeMappingDefinitions;
}
protected ArrayList<DefaultJavaAttributeMappingDefinition> buildDefaultJavaAttributeMappingDefinitions() {
ArrayList<DefaultJavaAttributeMappingDefinition> definitions = new ArrayList<DefaultJavaAttributeMappingDefinition>();
this.addDefaultJavaAttributeMappingDefinitionsTo(definitions);
return definitions;
}
/**
* To the specified list, add mapping definitions to use for analyzing the
* default mapping of an attribute. The order is important,
* as once a mapping definition tests positive for an attribute,
* all following mapping definitions are ignored.
*/
protected abstract void addDefaultJavaAttributeMappingDefinitionsTo(ArrayList<DefaultJavaAttributeMappingDefinition> definitions);
public final synchronized Iterable<JavaAttributeMappingDefinition> getSpecifiedJavaAttributeMappingDefinitions() {
if (this.specifiedJavaAttributeMappingDefinitions == null) {
this.specifiedJavaAttributeMappingDefinitions = this.buildSpecifiedJavaAttributeMappingDefinitions();
}
return this.specifiedJavaAttributeMappingDefinitions;
}
protected ArrayList<JavaAttributeMappingDefinition> buildSpecifiedJavaAttributeMappingDefinitions() {
ArrayList<JavaAttributeMappingDefinition> definitions = new ArrayList<JavaAttributeMappingDefinition>();
this.addSpecifiedJavaAttributeMappingDefinitionsTo(definitions);
return definitions;
}
/**
* To the specified list, add mapping definitions to use for analyzing the
* specified mapping of an attribute given all annotations on it. The order
* is important, as once a mapping definition tests positive for an
* attribute, all following mapping definitions are ignored.
*/
protected abstract void addSpecifiedJavaAttributeMappingDefinitionsTo(ArrayList<JavaAttributeMappingDefinition> definitions);
// ********** resource definitions **********
public final synchronized Iterable<ResourceDefinition> getResourceDefinitions() {
if (this.resourceDefinitions == null) {
this.resourceDefinitions = this.buildResourceDefinitions();
}
return this.resourceDefinitions;
}
protected ArrayList<ResourceDefinition> buildResourceDefinitions() {
ArrayList<ResourceDefinition> definitions = new ArrayList<ResourceDefinition>();
this.addResourceDefinitionsTo(definitions);
this.validateResourceDefinitions(definitions);
return definitions;
}
protected abstract void addResourceDefinitionsTo(ArrayList<ResourceDefinition> definitions);
protected void validateResourceDefinitions(ArrayList<ResourceDefinition> definitions) {
String message = "Duplicate resource definitions listed for resource type ''{0}'': {1}"; //$NON-NLS-1$
this.validate(definitions, ResourceDefinition.RESOURCE_TYPE_TRANSFORMER, message);
}
// ********** misc **********
protected <K, V> void validate(ArrayList<? extends V> values, Transformer<V, K> keyTransformer, String message) {
HashMap<K, ArrayList<V>> map = new HashMap<K, ArrayList<V>>(values.size());
for (V element : values) {
K key = keyTransformer.transform(element);
ArrayList<V> dupes = map.get(key);
if (dupes == null) {
dupes = new ArrayList<V>();
map.put(key, dupes);
}
dupes.add(element);
}
for (Map.Entry<K, ArrayList<V>> entry : map.entrySet()) {
ArrayList<V> dupes = entry.getValue();
if (dupes.size() > 1) {
JptJpaCorePlugin.instance().logError(message, entry.getKey(), dupes);
}
}
}
@Override
public String toString() {
return this.getClass().getSimpleName();
}
}
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