/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.isis.core.metamodel.adapter.oid.stringable.hex;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import org.apache.commons.codec.DecoderException;
import org.apache.commons.codec.binary.Hex;
import org.apache.isis.core.commons.encoding.DataInputStreamExtended;
import org.apache.isis.core.commons.encoding.DataOutputStreamExtended;
import org.apache.isis.core.commons.exceptions.IsisException;
import org.apache.isis.core.metamodel.adapter.oid.Oid;
import org.apache.isis.core.metamodel.adapter.oid.stringable.OidStringifier;
public class OidStringifierHex implements OidStringifier {
@Override
public String enString(final Oid oid) {
final ByteArrayOutputStream baos = new ByteArrayOutputStream();
final DataOutputStreamExtended outputImpl = new DataOutputStreamExtended(baos);
try {
outputImpl.writeEncodable(oid);
final byte[] byteArray = baos.toByteArray();
return new String(Hex.encodeHex(byteArray));
} catch (final IOException e) {
throw new IsisException("Failed to write object", e);
}
}
@Override
public Oid deString(final String oidStr) {
final char[] oidCharArray = oidStr.toCharArray();
byte[] oidBytes;
try {
oidBytes = Hex.decodeHex(oidCharArray);
final ByteArrayInputStream bais = new ByteArrayInputStream(oidBytes);
final DataInputStreamExtended inputImpl = new DataInputStreamExtended(bais);
return inputImpl.readEncodable(Oid.class);
} catch (final IOException ex) {
throw new IsisException("Failed to read object", ex);
} catch (final DecoderException ex) {
throw new IsisException("Failed to hex decode object", ex);
}
}
}