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/*
* 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.taverna.t2referencetest;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import org.apache.taverna.reference.ExternalReferenceBuilderSPI;
import org.apache.taverna.reference.ExternalReferenceConstructionException;
import org.apache.taverna.reference.ReferenceContext;
import org.apache.log4j.Logger;
/**
* Trivially build a GreenReference from an InputStream, implementing the
* ExternalReferenceBuilderSPI interface. Used in the augmentation test cases.
*
* @author Tom Oinn
*
*/
public class GreenBuilder implements
ExternalReferenceBuilderSPI<GreenReference> {
private static Logger logger = Logger
.getLogger(GreenBuilder.class);
/**
* Construct a new GreenReference from the given input stream, ignoring the
* otherwise helpful context as we don't need any resources from it. We
* assume UTF-8 encoding as that's what all the test reference types use,
* again, with a real example this might have to be a bit smarter!
*
* @throws ExternalReferenceConstructionException
* if there are any issues building the new GreenReference
* (which there won't be)
*/
@Override
public GreenReference createReference(InputStream is,
ReferenceContext context)
throws ExternalReferenceConstructionException {
GreenReference newReference = new GreenReference();
// Read input stream into the 'contents' property of the reference
BufferedReader in = new BufferedReader(new InputStreamReader(is));
try {
newReference.setContents(in.readLine());
} catch (IOException e) {
throw new ExternalReferenceConstructionException(e);
} finally {
try {
is.close();
in.close();
} catch (IOException e) {
logger.error("Unable to close streams", e);
}
}
return newReference;
}
/**
* Construction cost fixed at 1.5f
*
* @return <code>1.5f</code>
*/
@Override
public float getConstructionCost() {
return 1.5f;
}
/**
* @return <code>{@link org.apache.taverna.t2referencetest.GreenReference GreenReference}.class</code>
*/
@Override
public Class<GreenReference> getReferenceType() {
return GreenReference.class;
}
/**
* Doesn't use any context resources so is always enabled
*
* @return <code>true</code>
*/
@Override
public boolean isEnabled(ReferenceContext arg0) {
return true;
}
}