Improve XmlService

git-svn-id: https://brutex.net/svn/xservices/trunk@127 e7e49efb-446e-492e-b9ec-fcafc1997a86

src/java/net/brutex/xservices/types/AttributeType.java

@@ -0,0 +1,35 @@
+/*
+ *   Copyright 2013 Brian Rosenberger (Brutex Network)
+ *
+ *   Licensed 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 net.brutex.xservices.types;
+
+import javax.xml.bind.annotation.XmlElement;
+import javax.xml.bind.annotation.XmlType;
+
+import net.brutex.xservices.util.BrutexNamespaces;
+
+/**
+ * @author Brian Rosenberger, bru(at)brutex.de
+ *
+ */
+@XmlType(namespace=BrutexNamespaces.WS_XSERVICES, name=AttributeType.XML_NAME)
+public class AttributeType {
+	public final static String XML_NAME = "AttributeType";
+	@XmlElement(required=true, nillable=false)
+	public String name;
+	@XmlElement(nillable=true)
+	public String value;
+}

src/java/net/brutex/xservices/ws/XmlService.java

@@ -21,7 +21,9 @@ import javax.jws.WebParam;
 import javax.jws.WebService;
 import javax.xml.bind.annotation.XmlElement;
 
+import net.brutex.xservices.types.AttributeType;
 import net.brutex.xservices.types.NamespaceListType;
+import net.brutex.xservices.types.StringSplitType;
 import net.brutex.xservices.types.ant.FileResource;
 
 import org.apache.cxf.annotations.WSDLDocumentation;
@@ -43,6 +45,7 @@ public abstract interface XmlService
   @WSDLDocumentation("Insert an XML fragment into an XML document given as string.")
   public abstract String insertNodes(
 		  @WebParam(name="sourcexml") String source, 
+		  @WebParam(name="encoding") String encoding,
 		  @WebParam(name="namespaceList") NamespaceListType paramNamespaceListType, 
 		  @WebParam(name="xpath") @XmlElement(required=true) String paramString1, 
 		  @WebParam(name="xmldata") String paramString2)
@@ -61,6 +64,7 @@ public abstract interface XmlService
   @WSDLDocumentation("Replaces matched XML nodes with an XML document given as string.")
   public abstract String replaceNodes(
 		  @WebParam(name="sourcexml") String source,
+		  @WebParam(name="encoding") String encoding,
 		  @WebParam(name="namespaceList") NamespaceListType paramNamespaceListType, 
 		  @WebParam(name="xpath") @XmlElement(required=true) String paramString1, 
 		  @WebParam(name="xmldata") String paramString2)
@@ -80,4 +84,23 @@ public abstract interface XmlService
   public abstract String wrapInCDATA(@WebParam(name="data") @XmlElement(required=true) String data)
   	throws XServicesFault;
   
+  @WebMethod(operationName="selectXPath")
+  @WSDLDocumentation("Select from xml document given as string using an XPath expression.")
+  public abstract StringSplitType selectXPath(
+		  @WebParam(name="sourcexml") @XmlElement(required=true) String source,
+		  @WebParam(name="encoding") String encoding,
+		  @WebParam(name="namespaceList") NamespaceListType paramNamespaceListType, 
+		  @WebParam(name="xpath") @XmlElement(required=true) String paramString1)
+  	throws XServicesFault;
+  
+  @WebMethod(operationName="setAttribute")
+  @WSDLDocumentation("Set an attribute.")
+  public abstract String setAttribute(
+		  @WebParam(name="sourcexml") @XmlElement(required=true) String source,
+		  @WebParam(name="encoding") String encoding,
+		  @WebParam(name="namespaceList") NamespaceListType paramNamespaceListType, 
+		  @WebParam(name="xpath") @XmlElement(required=true) String paramString1,
+		  @WebParam(name="attribute") @XmlElement(nillable=false, required=true) AttributeType attr)
+  	throws XServicesFault;
+
 }

src/java/net/brutex/xservices/ws/impl/XmlServiceImpl.java

@@ -21,26 +21,37 @@ import java.io.IOException;
 import java.io.InputStream;
 import java.io.StringReader;
 import java.io.StringWriter;
+import java.io.UnsupportedEncodingException;
+import java.nio.charset.Charset;
+import java.nio.charset.IllegalCharsetNameException;
 import java.util.Iterator;
 import java.util.List;
 import java.util.StringTokenizer;
 
 import javax.jws.WebService;
+import javax.xml.namespace.QName;
 import javax.xml.stream.XMLOutputFactory;
 import javax.xml.stream.XMLStreamException;
 import javax.xml.stream.XMLStreamReader;
 import javax.xml.stream.XMLStreamWriter;
+
+import net.brutex.xservices.types.AttributeType;
 import net.brutex.xservices.types.NamespaceListType;
 import net.brutex.xservices.types.NamespaceType;
+import net.brutex.xservices.types.StringSplitType;
 import net.brutex.xservices.types.ant.FileResource;
 import net.brutex.xservices.ws.XServicesFault;
 import net.brutex.xservices.ws.XmlService;
 import org.apache.axiom.om.OMAbstractFactory;
+import org.apache.axiom.om.OMAttribute;
 import org.apache.axiom.om.OMCloneOptions;
+import org.apache.axiom.om.OMComment;
 import org.apache.axiom.om.OMContainer;
 import org.apache.axiom.om.OMDocument;
 import org.apache.axiom.om.OMElement;
+import org.apache.axiom.om.OMFactory;
 import org.apache.axiom.om.OMNode;
+import org.apache.axiom.om.OMProcessingInstruction;
 import org.apache.axiom.om.OMText;
 import org.apache.axiom.om.OMXMLBuilderFactory;
 import org.apache.axiom.om.xpath.AXIOMXPath;
@@ -72,13 +83,7 @@ public class XmlServiceImpl implements XmlService {
 			}
 
 			// Initialize XPath context
-			SimpleNamespaceContext context = new SimpleNamespaceContext();
+			SimpleNamespaceContext context = createContext(nsList);
-			for (NamespaceType ns : nsList.getNamespaces()) {
-				context.addNamespace(ns.getPrefix(), ns.getUri().toString());
-				this.logger.debug(Messages.getString("XmlService.0")
-						+ ns.getPrefix() + "=\"" + ns.getUri().toString()
-						+ "\"'");
-			}
 			axp.setNamespaceContext(context);
 			axp.addNamespaces(fragdoc.getOMDocumentElement());
 
@@ -103,87 +108,51 @@ public class XmlServiceImpl implements XmlService {
 		}
 	}
 
-	public String replaceNodesFromFile(FileResource res, NamespaceListType nsList, String xpath, String replace) throws XServicesFault {
+	public String replaceNodesFromFile(FileResource res, NamespaceListType nsList, String xpath, String xmlFragment) throws XServicesFault {
 		try {
-			AXIOMXPath axp = new AXIOMXPath(xpath);
+				AXIOMXPath axp = new AXIOMXPath(xpath);
-
+				InputStream is = res.getAntResource(null).getInputStream();
-			InputStream is = res.getAntResource(null).getInputStream();
+				OMDocument sourcedoc = OMXMLBuilderFactory.createOMBuilder(is).getDocument();
-
+				OMDocument fragdoc = null;
-			XMLStreamReader reader = OMXMLBuilderFactory.createOMBuilder(is)
+				if ((xmlFragment != null) && (new String(xmlFragment).length() > 0)) {
-					.getDocument().getXMLStreamReader(false);
+					fragdoc = OMXMLBuilderFactory.createOMBuilder(
-			StringWriter sw = new StringWriter();
+							new StringReader("<XS>" + xmlFragment + "</XS>"))
-			OMAbstractFactory.getOMFactory();
-
-			while (reader.hasNext()) {
-				if (reader.getEventType() == 1) {
-					OMElement element = OMXMLBuilderFactory
-							.createStAXOMBuilder(reader).getDocumentElement();
-					element.build();
-
-					SimpleNamespaceContext context = new SimpleNamespaceContext();
-					for (NamespaceType ns : nsList.getNamespaces()) {
-						context.addNamespace(ns.getPrefix(), ns.getUri()
-								.toString());
-						this.logger.debug(Messages.getString(
-								"XmlService.adding_namespace",
-								new Object[] { ns.getPrefix(),
-										ns.getUri().toString() }));
-					}
-					axp.setNamespaceContext(context);
-					axp.addNamespaces(element);
-
-					OMDocument xfrag = OMXMLBuilderFactory.createOMBuilder(
-							new StringReader("<XS>" + replace + "</XS>"))
 							.getDocument();
-					xfrag.build();
-
-					List list = axp.selectNodes(element);
-					for (Iterator localIterator2 = list.iterator(); localIterator2
-							.hasNext();) {
-						Object o = localIterator2.next();
-						if (!(o instanceof OMNode))
-							throw new XServicesFault(
-									"You must match a node to be replaced, but you matched something differen (attribute, etc.");
-						OMNode node = (OMNode) o;
-
-						Iterator<?> children = xfrag.getOMDocumentElement()
-								.getChildren();
-						while (children.hasNext()) {
-							OMNode container = (OMNode) children.next();
-							node.insertSiblingAfter((OMNode) container
-									.clone(new OMCloneOptions()));
-						}
-						node.detach();
-
-						// node.insertSiblingAfter(AXIOMUtil.stringToOM(replace));
-
-					}
-					XMLOutputFactory xof = XMLOutputFactory.newInstance();
-					XMLStreamWriter writer = xof.createXMLStreamWriter(sw);
-					element.serialize(writer);
-					sw.flush();
 				} else {
-					reader.next();
+					throw new XServicesFault("No xmldata to insert.");
 				}
+
+				// Initialize XPath context
+				SimpleNamespaceContext context = createContext(nsList);
+				axp.setNamespaceContext(context);
+				axp.addNamespaces(fragdoc.getOMDocumentElement());
+
+				OMDocument document = replaceNodes(sourcedoc, axp, fragdoc);
+
+				StringWriter sw = new StringWriter();
+				XMLOutputFactory xof = XMLOutputFactory.newInstance();
+				XMLStreamWriter writer = xof.createXMLStreamWriter(sw);
+				document.serialize(writer);
+
+				this.logger.trace(sw.getBuffer().toString());
+				return sw.getBuffer().toString();
+			} catch (JaxenException e) {
+				e.printStackTrace();
+				throw new XServicesFault(e);
+			} catch (XMLStreamException e) {
+				e.printStackTrace();
+				throw new XServicesFault(e);
+			} catch (IOException e) {
+				e.printStackTrace();
+				throw new XServicesFault(e);
 			}
-			this.logger.trace(sw.getBuffer().toString());
-			return sw.getBuffer().toString();
-		} catch (JaxenException e) {
-			e.printStackTrace();
-			throw new XServicesFault(e);
-		} catch (IOException e) {
-			e.printStackTrace();
-			throw new XServicesFault(e);
-		} catch (XMLStreamException e) {
-			e.printStackTrace();
-			throw new XServicesFault(e);
-		}
 	}
 
-	public String replaceNodes(String source, NamespaceListType nsList, String xpath, String xmlFragment) throws XServicesFault {
+	public String replaceNodes(String source, String encoding, NamespaceListType nsList, String xpath, String xmlFragment) throws XServicesFault {
+		encoding = validateEncoding(encoding);
 		try {
 			AXIOMXPath axp = new AXIOMXPath(xpath);
-			InputStream is = new ByteArrayInputStream(source.getBytes());
+			InputStream is = new ByteArrayInputStream(source.getBytes(encoding));
 			OMDocument sourcedoc = OMXMLBuilderFactory.createOMBuilder(is)
 					.getDocument();
 			OMDocument fragdoc = null;
@@ -196,13 +165,7 @@ public class XmlServiceImpl implements XmlService {
 			}
 
 			// Initialize XPath context
-			SimpleNamespaceContext context = new SimpleNamespaceContext();
+			SimpleNamespaceContext context = createContext(nsList);
-			for (NamespaceType ns : nsList.getNamespaces()) {
-				context.addNamespace(ns.getPrefix(), ns.getUri().toString());
-				this.logger.debug(Messages.getString("XmlService.0")
-						+ ns.getPrefix() + "=\"" + ns.getUri().toString()
-						+ "\"'");
-			}
 			axp.setNamespaceContext(context);
 			axp.addNamespaces(fragdoc.getOMDocumentElement());
 
@@ -221,13 +184,16 @@ public class XmlServiceImpl implements XmlService {
 		} catch (XMLStreamException e) {
 			e.printStackTrace();
 			throw new XServicesFault(e);
+		} catch (UnsupportedEncodingException e) {
+			throw new XServicesFault(e);
 		}
 	}
 	
-	public String insertNodes(String source, NamespaceListType nsList, String xpath, String xmlFragment) throws XServicesFault {
+	public String insertNodes(String source, String encoding, NamespaceListType nsList, String xpath, String xmlFragment) throws XServicesFault {
+		encoding = validateEncoding(encoding);
 		try {
 			AXIOMXPath axp = new AXIOMXPath(xpath);
-			InputStream is = new ByteArrayInputStream(source.getBytes());
+			InputStream is = new ByteArrayInputStream(source.getBytes(encoding));
 			OMDocument sourcedoc = OMXMLBuilderFactory.createOMBuilder(is)
 					.getDocument();
 			OMDocument fragdoc = null;
@@ -240,13 +206,7 @@ public class XmlServiceImpl implements XmlService {
 			}
 
 			// Initialize XPath context
-			SimpleNamespaceContext context = new SimpleNamespaceContext();
+			SimpleNamespaceContext context = createContext(nsList);
-			for (NamespaceType ns : nsList.getNamespaces()) {
-				context.addNamespace(ns.getPrefix(), ns.getUri().toString());
-				this.logger.debug(Messages.getString("XmlService.0")
-						+ ns.getPrefix() + "=\"" + ns.getUri().toString()
-						+ "\"'");
-			}
 			axp.setNamespaceContext(context);
 			axp.addNamespaces(fragdoc.getOMDocumentElement());
 
@@ -265,6 +225,8 @@ public class XmlServiceImpl implements XmlService {
 		} catch (XMLStreamException e) {
 			e.printStackTrace();
 			throw new XServicesFault(e);
+		} catch (UnsupportedEncodingException e) {
+			throw new XServicesFault(e);
 		}
 	}
 
@@ -280,6 +242,115 @@ public class XmlServiceImpl implements XmlService {
 		result = "<![CDATA[" + result + "]]>";
 		return result;
 	}
+
+	public StringSplitType selectXPath(String source, String encoding, NamespaceListType nsList, String xpath) throws XServicesFault {
+		encoding = validateEncoding(encoding);
+		try {
+			StringSplitType rarray = new StringSplitType();
+			AXIOMXPath axp = new AXIOMXPath(xpath);
+			InputStream is = new ByteArrayInputStream(source.getBytes(encoding));
+			OMDocument sourcedoc = OMXMLBuilderFactory.createOMBuilder(is).getDocument();
+			
+			// Initialize XPath context
+			SimpleNamespaceContext context = createContext(nsList);
+			
+			axp.setNamespaceContext(context);
+			List results = axp.selectNodes(sourcedoc);
+			for(Object o : results) {
+				String text = null;
+				
+				if(o instanceof OMNode) {
+					switch (((OMNode)o).getType()) {
+						case OMNode.TEXT_NODE:
+							text = ((OMText)o).getText();
+							break;
+						case OMNode.COMMENT_NODE:
+							text = ((OMComment)o).getValue();
+							break;
+						case OMNode.PI_NODE:
+							text = ((OMProcessingInstruction)o).getValue();
+							break;
+						default:
+							StringWriter sw = new StringWriter();
+							XMLOutputFactory xof = XMLOutputFactory.newInstance();
+							XMLStreamWriter writer = xof.createXMLStreamWriter(sw);
+							((OMNode)o).serialize(writer);
+							writer.flush();
+							text = sw.toString();							
+					}					
+				} else if(o instanceof OMAttribute) {
+					text = ((OMAttribute)o).getAttributeValue();
+				} else {
+					text = String.valueOf(o);
+				}
+				rarray.addStringMatch(text);
+			}
+			
+
+			return rarray;
+			} catch (JaxenException e) {
+			e.printStackTrace();
+			throw new XServicesFault(e);
+		} catch (XMLStreamException e) {
+				// TODO Auto-generated catch block
+			throw new XServicesFault(e.getMessage());
+			} catch (UnsupportedEncodingException e) {
+				throw new XServicesFault(e);
+		}
+	}
+	
+	public String setAttribute(String source, String encoding, NamespaceListType nsList, String xpath, AttributeType attr) throws XServicesFault {
+		encoding = validateEncoding(encoding);
+		try {
+			StringSplitType rarray = new StringSplitType();
+			AXIOMXPath axp = new AXIOMXPath(xpath);
+			InputStream is = new ByteArrayInputStream(source.getBytes(encoding));
+			OMDocument sourcedoc = OMXMLBuilderFactory.createOMBuilder(is).getDocument();
+			OMFactory fac = OMAbstractFactory.getOMFactory();
+			
+			// Initialize XPath context
+			SimpleNamespaceContext context = createContext(nsList);
+			
+			axp.setNamespaceContext(context);
+			List results = axp.selectNodes(sourcedoc);
+			for(Object o : results) {
+				String text = null;
+				
+				if(o instanceof OMNode) {
+					switch (((OMNode)o).getType()) {
+						case OMNode.ELEMENT_NODE:
+							OMElement node = ((OMElement)o);
+							if(attr.value == null) {
+								node.removeAttribute( node.getAttribute(new QName(attr.name)));
+							} else {
+								node.addAttribute(attr.name, attr.value, node.getNamespace());
+							}
+							break;
+						default:
+							throw new XServicesFault("XPath expression did not match an element node.");
+					}
+				} else {
+					throw new XServicesFault("XPath expression did not match a node.");
+				}
+			}
+						
+			StringWriter sw = new StringWriter();
+			XMLOutputFactory xof = XMLOutputFactory.newInstance();
+			XMLStreamWriter writer = xof.createXMLStreamWriter(sw);
+			sourcedoc.serialize(writer);
+			writer.flush();
+			return sw.toString();	
+			} catch (JaxenException e) {
+			e.printStackTrace();
+			throw new XServicesFault(e);
+		} catch (XMLStreamException e) {
+				// TODO Auto-generated catch block
+			throw new XServicesFault(e.getMessage());
+			} catch (UnsupportedEncodingException e) {
+				throw new XServicesFault(e);
+		}
+	}
+	
 	private OMDocument insertNodes(OMDocument xmldocument, AXIOMXPath axp,OMDocument xmlfragment) throws XServicesFault {
 		List<?> olist = null;
 		try {
@@ -405,4 +476,31 @@ public class XmlServiceImpl implements XmlService {
 		xmldocument.build();
 		return xmldocument;
 	}
+
+	private SimpleNamespaceContext createContext(NamespaceListType nsList) {
+		// Initialize XPath context
+		SimpleNamespaceContext context = new SimpleNamespaceContext();
+		if(nsList != null) {
+			for (NamespaceType ns : nsList.getNamespaces()) {
+				context.addNamespace(ns.getPrefix(), ns.getUri().toString());
+				this.logger.debug(Messages.getString("XmlService.0")
+						+ ns.getPrefix() + "=\"" + ns.getUri().toString()
+						+ "\"'");
+			}
+		} else {
+			logger.debug("No namespaces defined.");
+		}
+		return context;
+	}
+
+	private String validateEncoding(String encoding) throws XServicesFault {
+		if(encoding == null || encoding.equals("")) { encoding=Charset.defaultCharset().displayName(); }
+		try { 
+			Charset.isSupported(encoding);
+		} catch (IllegalCharsetNameException e) {
+			throw new XServicesFault("Endcoding '"+encoding+"' is not supported by this JRE.");
+		}
+		logger.debug("Setting source xml string encoding to '"+encoding+"'");
+		return encoding;
+	}
 }