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Merge branch 'develop' of https://github.com/eXist-db/exist into develop

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2 parents 5b8a5e6 + 2aa3748 commit 1ae8b49753d4a70724fe8492e320705d7c784951 @wolfgangmm wolfgangmm committed Mar 2, 2014
@@ -221,7 +221,9 @@
new FunctionDef(FunHigherOrderFun.signatures[3], FunHigherOrderFun.class),
new FunctionDef(FunHigherOrderFun.signatures[4], FunHigherOrderFun.class),
new FunctionDef(FunEnvironment.signature[0], FunEnvironment.class),
- new FunctionDef(FunEnvironment.signature[1], FunEnvironment.class),
+ new FunctionDef(FunEnvironment.signature[1], FunEnvironment.class),
+ new FunctionDef(ParsingFunctions.signatures[0], ParsingFunctions.class),
+ new FunctionDef(ParsingFunctions.signatures[1], ParsingFunctions.class)
};
static {
@@ -0,0 +1,145 @@
+/*
+ * eXist Open Source Native XML Database
+ * Copyright (C) 2001-09 The eXist Project
+ * http://exist-db.org
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * $Id$
+ */
+package org.exist.xquery.functions.fn;
+
+import org.apache.log4j.Logger;
+import org.exist.Namespaces;
+import org.exist.dom.QName;
+import org.exist.memtree.DocumentImpl;
+import org.exist.memtree.MemTreeBuilder;
+import org.exist.memtree.NodeImpl;
+import org.exist.memtree.SAXAdapter;
+import org.exist.validation.ValidationReport;
+import org.exist.xquery.*;
+import org.exist.xquery.functions.validation.Shared;
+import org.exist.xquery.value.FunctionParameterSequenceType;
+import org.exist.xquery.value.FunctionReturnSequenceType;
+import org.exist.xquery.value.NodeValue;
+import org.exist.xquery.value.Sequence;
+import org.exist.xquery.value.SequenceType;
+import org.exist.xquery.value.Type;
+import org.exist.xquery.value.ValueSequence;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
+import org.xml.sax.InputSource;
+import org.xml.sax.SAXException;
+import org.xml.sax.XMLReader;
+
+import javax.xml.parsers.ParserConfigurationException;
+import javax.xml.parsers.SAXParser;
+import javax.xml.parsers.SAXParserFactory;
+import java.io.IOException;
+import java.io.StringReader;
+
+public class ParsingFunctions extends BasicFunction {
+
+ protected static final FunctionReturnSequenceType RESULT_TYPE_FOR_PARSE_XML = new FunctionReturnSequenceType(Type.DOCUMENT,
+ Cardinality.ZERO_OR_ONE, "the parsed document");
+ protected static final FunctionReturnSequenceType RESULT_TYPE_FOR_PARSE_XML_FRAGMENT = new FunctionReturnSequenceType(Type.ELEMENT,
+ Cardinality.ZERO_OR_MORE, "the parsed document fragment");
+
+ protected static final FunctionParameterSequenceType TO_BE_PARSED_PARAMETER = new FunctionParameterSequenceType(
+ "arg", Type.STRING, Cardinality.ZERO_OR_ONE, "The string to be parsed");
+
+ protected static final Logger logger = Logger.getLogger(ParsingFunctions.class);
+
+ public final static FunctionSignature signatures[] = {
+ new FunctionSignature(
+ new QName("parse-xml", Function.BUILTIN_FUNCTION_NS),
+ "This function takes as input an XML document represented as a string,"
+ + " and returns the document node at the root of an XDM tree representing the parsed document.",
+ new SequenceType[] { TO_BE_PARSED_PARAMETER }, RESULT_TYPE_FOR_PARSE_XML),
+ new FunctionSignature(
+ new QName("parse-xml-fragment", Function.BUILTIN_FUNCTION_NS),
+ "This function takes as input an XML external entity represented as a string," +
+ "and returns the document node at the root of an XDM tree representing the parsed document fragment.",
+ new SequenceType[] { TO_BE_PARSED_PARAMETER }, RESULT_TYPE_FOR_PARSE_XML_FRAGMENT) };
+
+ public ParsingFunctions(XQueryContext context, FunctionSignature signature) {
+ super(context, signature);
+ }
+
+ public Sequence eval(Sequence[] args, Sequence contextSequence) throws XPathException {
+
+ Sequence resultSequence;
+
+ if (args[0].getItemCount() == 0) {
+ return Sequence.EMPTY_SEQUENCE;
+ }
+ String xmlContent = args[0].itemAt(0).getStringValue();
+ if (xmlContent.length() == 0) {
+ return Sequence.EMPTY_SEQUENCE;
+ }
+
+ if (isCalledAs("parse-xml-fragment")) {
+ xmlContent = "<root>" + xmlContent + "</root>";
+ }
+
+ final StringReader reader = new StringReader(xmlContent);
+ final ValidationReport report = new ValidationReport();
+ final SAXAdapter adapter = new SAXAdapter(context);
+ try {
+ final SAXParserFactory factory = SAXParserFactory.newInstance();
+ factory.setNamespaceAware(true);
+ final InputSource src = new InputSource(reader);
+
+ XMLReader xr = null;
+
+ if (xr == null) {
+ final SAXParser parser = factory.newSAXParser();
+ xr = parser.getXMLReader();
+ }
+
+ xr.setErrorHandler(report);
+ xr.setContentHandler(adapter);
+ xr.setProperty(Namespaces.SAX_LEXICAL_HANDLER, adapter);
+ xr.parse(src);
+ } catch (final ParserConfigurationException e) {
+ throw new XPathException(this, ErrorCodes.EXXQDY0002, "Error while constructing XML parser: "
+ + e.getMessage(), args[0], e);
+ } catch (final SAXException e) {
+ logger.debug("Error while parsing XML: " + e.getMessage(), e);
+ } catch (final IOException e) {
+ throw new XPathException(this, ErrorCodes.EXXQDY0002, "Error while parsing XML: " + e.getMessage(),
+ args[0], e);
+ }
+
+ if (report.isValid()) {
+ if (isCalledAs("parse-xml-fragment")) {
+ resultSequence = new ValueSequence();
+ NodeList children = adapter.getDocument().getDocumentElement().getChildNodes();
+ for (int i = 0, il = children.getLength(); i < il; i++) {
+ Node child = children.item(i);
+ resultSequence.add((NodeValue)child);
+ }
+
+ return resultSequence;
+ } else {
+ return (DocumentImpl) adapter.getDocument();
+ }
+ } else {
+ final MemTreeBuilder builder = context.getDocumentBuilder();
+ final NodeImpl result = Shared.writeReport(report, builder);
+ throw new XPathException(this, ErrorCodes.EXXQDY0002, report.toString(), result);
+ }
+ }
+}

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