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/*******************************************************************************
* Copyright (c) 2011, 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.eclipselink.core.internal.libval;
import java.util.Set;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jdt.core.IClasspathEntry;
import org.eclipse.jdt.core.ToolFactory;
import org.eclipse.jdt.core.util.IClassFileReader;
import org.eclipse.jdt.core.util.IFieldInfo;
import org.eclipse.jpt.common.eclipselink.core.internal.JptCommonEclipseLinkCoreMessages;
import org.eclipse.jpt.common.eclipselink.core.internal.plugin.JptCommonEclipseLinkCorePlugin;
import org.eclipse.jpt.common.utility.internal.StringTools;
import org.eclipse.osgi.service.resolver.VersionRange;
import org.osgi.framework.Version;
public class EclipseLinkLibValUtil {
private final static String VERSION_CLASS_PATH = "org/eclipse/persistence/Version.class"; //$NON-NLS-1$
private final static String VERSION_FIELD_NAME = "version"; //$NON-NLS-1$
public static IStatus validate(Iterable<IClasspathEntry> libraryEntries, Set<VersionRange> versionRanges) {
Version version = null;
for (IClasspathEntry entry : libraryEntries) {
String versionString = null;
if (entry.getEntryKind() == IClasspathEntry.CPE_LIBRARY) {
IClassFileReader classReader =
ToolFactory.createDefaultClassFileReader(
entry.getPath().toFile().getAbsolutePath(), VERSION_CLASS_PATH, IClassFileReader.FIELD_INFOS);
if (classReader != null) {
for (IFieldInfo field : classReader.getFieldInfos()) {
if (StringTools.stringsAreEqual(field.getName(), VERSION_FIELD_NAME.toCharArray())) {
try {
versionString = field.getConstantValueAttribute().getConstantValue().getStringValue();
}
catch (Exception e) {
// potentially a bit could go wrong with that last line, but if any
// assumptions aren't met, there's no value
}
break;
}
}
}
if (versionString != null) {
if (version != null) {
return buildErrorStatus(JptCommonEclipseLinkCoreMessages.EclipseLinkLibraryValidator_multipleEclipseLinkVersions);
}
version = new Version(versionString);
}
}
}
if (version == null) {
return buildErrorStatus(JptCommonEclipseLinkCoreMessages.EclipseLinkLibraryValidator_noEclipseLinkVersion);
}
for (VersionRange versionRange : versionRanges) {
if (! versionRange.isIncluded(version)) {
return buildErrorStatus(JptCommonEclipseLinkCoreMessages.EclipseLinkLibraryValidator_improperEclipseLinkVersion);
}
}
return Status.OK_STATUS;
}
private static IStatus buildErrorStatus(String message) {
return JptCommonEclipseLinkCorePlugin.instance().buildErrorStatus(message);
}
}
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