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package org.eclipse.emf.cdo.spi.common.id;
import org.eclipse.emf.cdo.common.id.CDOIDLibraryDescriptor;
import org.eclipse.emf.cdo.common.id.CDOIDLibraryProvider;
import org.eclipse.net4j.util.io.ExtendedDataInput;
import org.eclipse.net4j.util.io.IOUtil;
import org.eclipse.net4j.util.om.OMBundle;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
/**
* @author Eike Stepper
* @since 2.0
*/
public class CDOIDLibraryProviderImpl implements CDOIDLibraryProvider
{
private Map<String, OMBundle> bundles = new HashMap<String, OMBundle>();
public CDOIDLibraryProviderImpl()
{
}
public void addLibrary(String libraryName, OMBundle bundle)
{
bundles.put(libraryName, bundle);
}
public String[] getLibraryNames()
{
Set<String> libraryNames = bundles.keySet();
return libraryNames.toArray(new String[libraryNames.size()]);
}
public CDOIDLibraryDescriptor createDescriptor(String factoryName)
{
return new Descriptor(factoryName);
}
public InputStream getContents(String libraryName) throws IOException
{
File library = getLibrary(libraryName);
return IOUtil.openInputStream(library);
}
public int getSize(String libraryName)
{
File library = getLibrary(libraryName);
return (int)library.length();
}
private File getLibrary(String libraryName)
{
OMBundle bundle = bundles.get(libraryName);
if (bundle == null)
{
throw new IllegalStateException("Unknown library: " + libraryName);
}
URL url = bundle.getBaseURL();
File file = new File(url.getFile());
if (file.exists() && file.isDirectory())
{
file = new File(file, libraryName);
}
if (file.exists() && file.isFile() && file.getName().endsWith(".jar"))
{
return file;
}
throw new IllegalStateException("Not a JAR: " + file.getAbsolutePath());
}
/**
* @author Eike Stepper
*/
private final class Descriptor extends CDOIDLibraryDescriptorImpl
{
public Descriptor(String factoryName)
{
super(factoryName, CDOIDLibraryProviderImpl.this.getLibraryNames());
}
public Descriptor(ExtendedDataInput in) throws IOException
{
super(in);
}
}
}
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