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/*******************************************************************************
* Copyright (c) 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.common.core.internal;
import java.util.regex.Pattern;
import org.eclipse.core.expressions.PropertyTester;
import org.eclipse.core.runtime.Platform;
import org.eclipse.core.runtime.content.IContentType;
import org.eclipse.jpt.common.core.JptResourceType;
import org.eclipse.jpt.common.core.JptResourceTypeReference;
import org.eclipse.jpt.common.core.internal.utility.PlatformTools;
/**
* Property tester for {@link JptResourceTypeReference}.
* See <code>org.eclipse.jpt.common.core/plugin.xml:org.eclipse.core.expressions.propertyTesters</code>
* @see JptResourceType#isKindOf(JptResourceType)
*/
public class JptResourceTypeReferencePropertyTester
extends PropertyTester
{
/**
* To test a {@link JptResourceTypeReference resource type reference}, specify
* the resource type identifier and, optionally, a version; using the format
* <code>"<em><resource-type-id></em>:<em><version></em>"</code>
* (e.g. <code>"org.eclipse.jpt.jpa.eclipselink.core.content.orm:2.1"</code>)
*/
public static final String RESOURCE_TYPE_IS_KIND_OF = "resourceTypeIsKindOf"; //$NON-NLS-1$
public static final Pattern RESOURCE_TYPE_PATTERN = Pattern.compile(":"); //$NON-NLS-1$
public boolean test(Object receiver, String property, Object[] args, Object expectedValue) {
if (receiver instanceof JptResourceTypeReference) {
return this.test((JptResourceTypeReference) receiver, property, expectedValue);
}
return false;
}
private boolean test(JptResourceTypeReference ref, String property, Object expectedValue) {
if (property.equals(RESOURCE_TYPE_IS_KIND_OF)) {
return this.resourceTypeIsKindOf(ref, (String) expectedValue);
}
return false;
}
private boolean resourceTypeIsKindOf(JptResourceTypeReference ref, String expectedValue) {
return this.resourceTypeIsKindOf(ref, RESOURCE_TYPE_PATTERN.split(expectedValue));
}
private boolean resourceTypeIsKindOf(JptResourceTypeReference ref, String[] subStrings) {
int len = subStrings.length;
if ((len < 1) || (len > 2)) {
return false;
}
String contentTypeID = subStrings[0];
String version = (len == 2) ? subStrings[1] : JptResourceType.UNDETERMINED_VERSION;
return this.resourceTypeIsKindOf(ref, contentTypeID, version);
}
private boolean resourceTypeIsKindOf(JptResourceTypeReference ref, String contentTypeID, String version) {
IContentType contentType = this.getContentType(contentTypeID);
return (contentType != null) && this.resourceTypeIsKindOf(ref, contentType, version);
}
private IContentType getContentType(String contentTypeID) {
return Platform.getContentTypeManager().getContentType(contentTypeID);
}
private boolean resourceTypeIsKindOf(JptResourceTypeReference ref, IContentType contentType, String version) {
JptResourceType resourceType = PlatformTools.getResourceType(contentType, version);
return (resourceType != null) && ref.getResourceType().isKindOf(resourceType);
}
}
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