public ResourceKey deserialize(final ResourceKey bundleKey, final String stringKey)
throws ResourceKeyCreationException {
// Parse the data
final ResourceKeyData keyData = ResourceKeyUtils.parse(stringKey);
// Validate the data
if (SCHEMA_NAME.equals(keyData.getSchema()) == false) {
throw new ResourceKeyCreationException(
"Serialized version of key does not contain correct schema");
}
// Create a new file based on the path provided
final File file = new File(keyData.getIdentifier());
return new ResourceKey(SCHEMA_NAME, file, keyData.getFactoryParameters());
}
public String serialize(final ResourceKey bundleKey, final ResourceKey key)
throws ResourceException {
// Validate the parameter
if (key == null) {
throw new NullPointerException("The ResourceKey can not be null");
}
if (isSupportedKey(key) == false) {
throw new IllegalArgumentException("Key format is not recognized.");
}
if (!(key.getIdentifier() instanceof File)) {
throw new IllegalArgumentException(
"ResourceKey is invalid - identifier is not a File object");
}
// Log information
logger.debug("Serializing a File Resource Key...");
if (key.getParent() != null) {
throw new ResourceException(
"Unable to serialize a File-ResourceKey with a parent. This type is not expected to have a parent.");
}
// Create a string version of the identifier
try {
final File file = (File) key.getIdentifier();
final String strIdentifier = file.getCanonicalPath();
final String result =
ResourceKeyUtils.createStringResourceKey(
key.getSchema().toString(), strIdentifier, key.getFactoryParameters());
logger.debug("Serialized File Resource Key: [" + result + "]");
return result;
} catch (IOException ioe) {
throw new IllegalArgumentException(
"Could not determine cononical path to file specified in ResourceKey: "
+ ioe.getMessage());
}
}
public boolean isSupportedDeserializer(final String data) {
return SCHEMA_NAME.equals(ResourceKeyUtils.readSchemaFromString(data));
}
/**
* A helper method that serializes the element object.
*
* @param stream the stream to which the element should be serialized.
* @throws IOException if an IO error occured or a property was not serializable.
*/
private void writeObject(final ObjectOutputStream stream) throws IOException {
stream.defaultWriteObject();
final ReportAttributeMap attributes = this.attributes;
stream.writeLong(attributes.getChangeTracker());
final String[] nameSpaces = attributes.getNameSpaces();
stream.writeObject(nameSpaces);
for (int i = 0; i < nameSpaces.length; i++) {
final String nameSpace = nameSpaces[i];
final String[] names = attributes.getNames(nameSpace);
stream.writeObject(names);
for (int j = 0; j < names.length; j++) {
final String name = names[j];
final Object attribute = attributes.getAttribute(nameSpace, name);
final AttributeMetaData data = getMetaData().getAttributeDescription(nameSpace, name);
if (data != null) {
if (data.isTransient()) {
stream.writeByte(1);
continue;
}
if (attribute instanceof ResourceKey) {
final ResourceKey key = (ResourceKey) attribute;
final ResourceKey parent = key.getParent();
if (AttributeNames.Core.NAMESPACE.equals(nameSpace)
&& (AttributeNames.Core.CONTENT_BASE.equals(name)
|| AttributeNames.Core.SOURCE.equals(name))) {
if (parent != null) {
// unwrap the content base attribute. After deserialization, the report assumes the
// bundle-location
// as content base, as the bundle will be gone.
if (isKeySerializable(parent)) {
stream.writeByte(0);
SerializerHelper.getInstance().writeObject(parent, stream);
} else {
stream.writeByte(1);
}
} else {
// great, the report was never part of a bundle. That makes life easier and the key
// should be
// safely serializable too.
if (isKeySerializable(key)) {
stream.writeByte(0);
SerializerHelper.getInstance().writeObject(key, stream);
} else {
stream.writeByte(1);
}
}
} else {
if ("Resource".equals(data.getValueRole()) || parent != null) {
stream.writeByte(0);
try {
final ResourceKey resourceKey =
ResourceKeyUtils.embedResourceInKey(
locateResourceManager(), key, key.getFactoryParameters());
SerializerHelper.getInstance().writeObject(resourceKey, stream);
} catch (ResourceException e) {
throw new IOException("Failed to convert resource-key into byte-array key: " + e);
}
} else {
stream.writeByte(0);
SerializerHelper.getInstance().writeObject(attribute, stream);
}
}
} else if (SerializerHelper.getInstance().isSerializable(attribute)) {
stream.writeByte(0);
SerializerHelper.getInstance().writeObject(attribute, stream);
} else {
stream.writeByte(1);
}
} else if (attribute instanceof String) {
stream.writeByte(0);
SerializerHelper.getInstance().writeObject(attribute, stream);
} else {
stream.writeByte(1);
}
}
}
}
