trunk/src/modules/cforms/flow/lenyadoc-utils.js

/*
 * 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.
 *
 */

/* $Id: usecases.js 265544 2005-08-31 18:40:31Z thorsten $ */

var loadDocument;

function loadDocument(uri) {
    var parser = null;
    var source = null;
    var resolver = null;
    try {
        parser = cocoon.getComponent(Packages.org.apache.excalibur.xml.dom.DOMParser.ROLE);
        resolver = cocoon.getComponent(Packages.org.apache.cocoon.environment.SourceResolver.ROLE);
        source = resolver.resolveURI(uri);
        var is = new Packages.org.xml.sax.InputSource(source.getInputStream());
        is.setSystemId(source.getURI());
        return parser.parseDocument(is);
    } finally {
        if (source != null)
            resolver.release(source);
        cocoon.releaseComponent(parser);
        cocoon.releaseComponent(resolver);
    }
}

var saveDocument;

function saveDocument(document, uri) {
    var source = null;
    var resolver = null;
    var outputStream = null;
    try {
        resolver = cocoon.getComponent(Packages.org.apache.cocoon.environment.SourceResolver.ROLE);
        source = resolver.resolveURI(uri);

        var tf = Packages.javax.xml.transform.TransformerFactory.newInstance();

        if (source instanceof Packages.org.apache.excalibur.source.ModifiableSource
            && tf.getFeature(Packages.javax.xml.transform.sax.SAXTransformerFactory.FEATURE)) {

            outputStream = source.getOutputStream();
            var transformerHandler = tf.newTransformerHandler();
            var transformer = transformerHandler.getTransformer();
            transformer.setOutputProperty(Packages.javax.xml.transform.OutputKeys.INDENT, "true");
            transformer.setOutputProperty(Packages.javax.xml.transform.OutputKeys.METHOD, "xml");
            transformerHandler.setResult(new Packages.javax.xml.transform.stream.StreamResult(outputStream));

            var streamer = new Packages.org.apache.cocoon.xml.dom.DOMStreamer(transformerHandler);
            streamer.stream(document);
        } else {
            throw new Packages.org.apache.cocoon.ProcessingException("Cannot write to source " + uri);
        }
    } finally {
        if (source != null)
            resolver.release(source);
        cocoon.releaseComponent(resolver);
        if (outputStream != null) {
            try {
                outputStream.flush();
                outputStream.close();
            } catch (error) {
                cocoon.log.error("Could not flush/close outputstream: " + error);
            }
        }
    }
}
/*
 * 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.
 *
 */

/* $Id: usecases.js 265544 2005-08-31 18:40:31Z thorsten $ */

var loadDocument;

function loadDocument(uri) {
    var parser = null;
    var source = null;
    var resolver = null;
    try {
        parser = cocoon.getComponent(Packages.org.apache.excalibur.xml.dom.DOMParser.ROLE);
        resolver = cocoon.getComponent(Packages.org.apache.cocoon.environment.SourceResolver.ROLE);
        source = resolver.resolveURI(uri);
        var is = new Packages.org.xml.sax.InputSource(source.getInputStream());
        is.setSystemId(source.getURI());
        return parser.parseDocument(is);
    } finally {
        if (source != null)
            resolver.release(source);
        cocoon.releaseComponent(parser);
        cocoon.releaseComponent(resolver);
    }
}

var saveDocument;

function saveDocument(document, uri) {
    var source = null;
    var resolver = null;
    var outputStream = null;
    try {
        resolver = cocoon.getComponent(Packages.org.apache.cocoon.environment.SourceResolver.ROLE);
        source = resolver.resolveURI(uri);

        var tf = Packages.javax.xml.transform.TransformerFactory.newInstance();

        if (source instanceof Packages.org.apache.excalibur.source.ModifiableSource
            && tf.getFeature(Packages.javax.xml.transform.sax.SAXTransformerFactory.FEATURE)) {

            outputStream = source.getOutputStream();
            var transformerHandler = tf.newTransformerHandler();
            var transformer = transformerHandler.getTransformer();
            transformer.setOutputProperty(Packages.javax.xml.transform.OutputKeys.INDENT, "true");
            transformer.setOutputProperty(Packages.javax.xml.transform.OutputKeys.METHOD, "xml");
            transformerHandler.setResult(new Packages.javax.xml.transform.stream.StreamResult(outputStream));

            var streamer = new Packages.org.apache.cocoon.xml.dom.DOMStreamer(transformerHandler);
            streamer.stream(document);
        } else {
            throw new Packages.org.apache.cocoon.ProcessingException("Cannot write to source " + uri);
        }
    } finally {
        if (source != null)
            resolver.release(source);
        cocoon.releaseComponent(resolver);
        if (outputStream != null) {
            try {
                outputStream.flush();
                outputStream.close();
            } catch (error) {
                cocoon.log.error("Could not flush/close outputstream: " + error);
            }
        }
    }
}