plugins/org.eclipse.bpel.validator/src/org/eclipse/bpel/validator/xpath/Main.java - bpel/org.eclipse.bpel - Git at Google

 /*******************************************************************************
  * Copyright (c) 2006 Oracle Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  *     Oracle Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.bpel.validator.xpath;

 import java.io.IOException;
 import java.text.MessageFormat;
 import java.util.Iterator;
 import java.util.List;

 import org.eclipse.bpel.xpath10.*;
 import org.eclipse.bpel.xpath10.parser.XPath10Exception;
 import org.eclipse.bpel.xpath10.parser.XPath10Factory;

 /**
  * @author Michal Chmielewski (michal.chmielewski@oracle.com)
  * @date Oct 17, 2006
  *
  */

 @SuppressWarnings({"nls","boxing"})

 public class Main {

 	/**
 	 * @param argv
 	 * @throws Exception
 	 */
 	static public void main (String argv[]) throws Exception {

 		Main main = new Main();
 		main.prompt ();
 	}


 	void prompt () throws IOException {

 		int ch = 0;
 		Walker visitor = new Walker();

 		while (ch != -1) {

 			p("XPath> ");
 			StringBuilder buf = new StringBuilder(100);
 			ch = System.in.read();
 			while (ch != '\n' && ch != (-1) ) {
 				buf.append((char) ch);
 				ch = System.in.read();
 			}
 			String xpath = buf.toString().trim();
 			if (xpath.length() == 0) {
 				continue;
 			}

 			Expr expr = null;
 			try {
 				expr = XPath10Factory.create ( xpath );
 			} catch (XPath10Exception t) {
 				pl("error: ... cannot create XPath expression"); //$NON-NLS-1$
 				System.out.println(xpath);
 				for(int i=0,j=t.getPosition(); i <= j; i++) {
 					System.out.print(" ");
 				}
 				pl("^^^ {0}",t.getMessage());
 				continue;
 			}
 			visitor.visit( expr );
 		}
 	}


 	static void p (String msg, Object ... args ) {
 		String text = MessageFormat.format(msg, args);
 		System.out.print(text);
 		System.out.flush();
 	}


 	static void pl (String msg, Object ... args ) {
 		p(msg,args);
 		System.out.println(""); //$NON-NLS-1$
 		System.out.flush();
 	}


 	class Walker  {

 		int offset = 0;

 		/** (non-Javadoc)
 		 * @see org.jaxen.expr.VisitorSupport#visit(org.jaxen.expr.AdditiveExpr)
 		 */
 		protected void visit (AdditiveExpr arg0) {


 			out("{0}: op={1} text={2}",
 					arg0.getClass().getSimpleName(),
 					arg0.getOperator(),
 					arg0.getText() );
 			out("LHS:");
 			visit(arg0.getLHS());
 			out("RHS:");
 			visit(arg0.getRHS());
 		}


 		protected void visit(AllNodeStep arg0) {


 			out("{0}: axis={1}, text={2}",
 					arg0.getClass().getSimpleName(),
 					arg0.getAxis(),
 					arg0.getText());
 			out("predicates:");
 			visitList(arg0.getPredicates());

 		}


 		protected void visit(CommentNodeStep arg0) {


 			out("{0}: {1}",arg0.getClass().getSimpleName(),arg0.getText());
 			out("predicates:");
 			visitList(arg0.getPredicates());
 		}

 		protected void visit(EqualityExpr arg0) {


 			out("{0}: op={1} text={2}",
 					arg0.getClass().getSimpleName(),
 					arg0.getOperator(),
 					arg0.getText() );
 			out("LHS:");
 			visit(arg0.getLHS());
 			out("RHS:");
 			visit(arg0.getRHS());
 		}


 		protected void visit(FilterExpr arg0) {


 			out("{0}: text={1}",arg0.getClass().getSimpleName(),arg0.getText());
 			out("expression:");
 			visit(arg0.getExpr());
 			out("predicates:");
 			visitList(arg0.getPredicates());

 		}

 		protected void visit(FunctionCallExpr arg0) {


 			out("{0}: name={1}, prefix={2}, #arguments={3}, text={4}", //$NON-NLS-1$
 					arg0.getClass().getSimpleName(),
 					arg0.getFunctionName(),
 					arg0.getPrefix(),
 					arg0.getParameters().size(),
 					arg0.getText());
 			out("arguments:");
 			visitList(arg0.getParameters());
 		}


 		protected void visit(LiteralExpr arg0) {


 			out("{0}: literal={1}, text={2}",
 					arg0.getClass().getSimpleName(),
 					arg0.getLiteral(),
 					arg0.getText());
 		}


 		protected void visit (LocationPath arg0) {
 			out("{0}: text={1}",arg0.getClass().getSimpleName(),arg0.getText());
 			out("steps:");
 			visitList(arg0.getSteps());

 		}


 		protected void visit(LogicalExpr arg0) {


 			out("{0}: op={1} text={2}",
 					arg0.getClass().getSimpleName(),
 					arg0.getOperator(),
 					arg0.getText() );

 			out("LHS:");
 			visit(arg0.getLHS());
 			out("RHS:");
 			visit(arg0.getRHS());
 		}


 		protected void visit (MultiplicativeExpr arg0) {


 			out("{0}: op={1} text={2}",
 					arg0.getClass().getSimpleName(),
 					arg0.getOperator(),
 					arg0.getText() );
 			out("LHS:");
 			visit(arg0.getLHS());
 			out("RHS:");
 			visit(arg0.getRHS());
 		}


 		protected void visit(NameStep arg0) {


 			out("{0}: axis={1}, name={2}, prefix={3}, text={4}",
 					arg0.getClass().getSimpleName(),
 					arg0.getAxis(),
 					arg0.getLocalName(),
 					arg0.getPrefix(),
 					arg0.getText());
 			out("predicates:");
 			visitList(arg0.getPredicates());
 		}


 		protected void visit(NumberExpr arg0) {


 			out("{0}: {1}",arg0.getClass().getSimpleName(),arg0.getNumber());
 		}


 		protected void visit(PathExpr arg0) {


 			out("{0}: text={1}",arg0.getClass().getSimpleName(),arg0.getText());
 			out("filterExpr:");
 			visit ( arg0.getFilterExpr() );

 			out("locationPath:");
 			visit ( arg0.getLocationPath() );
 		}


 		protected void visit(Predicate arg0) {


 			out("{0}: text={1}",arg0.getClass().getSimpleName(),arg0.getText());
 			out("expression:");
 			visit(arg0.getExpr());
 		}


 		protected void visit(ProcessingInstructionNodeStep arg0) {
 			out("{0}: name={1}, axis={2}, text={3}",arg0.getClass().getSimpleName(),
 					arg0.getName(),
 					arg0.getAxis(),
 					arg0.getText());
 			out("predicates:");

 			visitList(arg0.getPredicates());
 		}


 		protected void visit(RelationalExpr arg0) {
 			out("{0}: op={1} text={2}",
 					arg0.getClass().getSimpleName(),
 					arg0.getOperator(),
 					arg0.getText() );
 			out("LHS:");
 			visit(arg0.getLHS());
 			out("RHS:");
 			visit(arg0.getRHS());
 		}


 		protected void visit(TextNodeStep arg0) {
 			out("{0}: axis={1}, text={2}",
 					arg0.getClass().getSimpleName(),
 					arg0.getAxis(),
 					arg0.getText());
 			out("predicates:");
 			visitList(arg0.getPredicates());
 		}


 		protected void visit(UnaryExpr arg0) {


 			out("{0}: text={1}",arg0.getClass().getSimpleName(),arg0.getText() ) ;
 			out("expression:");
 			visit(arg0.getExpr());
 		}

 		protected void visit(UnionExpr arg0) {
 			out("{0}: text={1}",
 					arg0.getClass().getSimpleName(),
 					arg0.getText() );
 			out("LHS:");
 			visit(arg0.getLHS());
 			out("RHS:");
 			visit(arg0.getRHS());
 		}

 		/** (non-Javadoc)
 		 * @see org.jaxen.expr.VisitorSupport#visit(org.jaxen.expr.VariableReferenceExpr)
 		 */

 		protected void visit(VariableReferenceExpr arg0) {


 			out("{0}: variable={1}, prefix={2}, text={3}",arg0.getClass().getSimpleName(),
 					arg0.getVariableName(),
 					arg0.getPrefix(),
 					arg0.getText());
 		}


 		protected void visitList (List<?> list) {
 			offset += 3;
 			Iterator<?> it = list.iterator();
 			while (it.hasNext()) {
 				visit(it.next());
 			}
 			offset -= 3;
 		}

 		/**
 		 * Visit the generic expression.
 		 *
 		 * @param expr
 		 */

 		public void visit (Object expr) {

 			offset += 2;

 			if (expr instanceof VariableReferenceExpr) {
 				visit ( (VariableReferenceExpr) expr);
 			} else if (expr instanceof UnionExpr) {
 				visit ( (UnionExpr) expr);
 			} else if ( expr instanceof UnaryExpr) {
 				visit ( (UnaryExpr) expr);
 			} else if ( expr instanceof TextNodeStep ) {
 				visit ( (TextNodeStep) expr) ;
 			} else if ( expr instanceof RelationalExpr) {
 				visit ( (RelationalExpr) expr);
 			} else if ( expr instanceof ProcessingInstructionNodeStep) {
 				visit ( (ProcessingInstructionNodeStep) expr) ;
 			} else if ( expr instanceof Predicate) {
 				visit ( (Predicate) expr );
 			} else if ( expr instanceof PathExpr) {
 				visit ( (PathExpr) expr) ;
 			} else if ( expr instanceof NumberExpr) {
 				visit ( (NumberExpr) expr);
 			} else if ( expr instanceof NameStep) {
 				visit ( (NameStep) expr);
 			} else if ( expr instanceof MultiplicativeExpr) {
 				visit ( (MultiplicativeExpr) expr);
 			} else if ( expr instanceof LogicalExpr) {
 				visit ( (LogicalExpr) expr);
 			} else if ( expr instanceof LocationPath) {
 				visit ( (LocationPath) expr);
 			} else if ( expr instanceof LiteralExpr) {
 				visit ( (LiteralExpr) expr);
 			} else if ( expr instanceof FunctionCallExpr) {
 				visit ( (FunctionCallExpr) expr);
 			} else if ( expr instanceof FilterExpr) {
 				visit ( (FilterExpr) expr);
 			} else if ( expr instanceof EqualityExpr) {
 				visit ( (EqualityExpr) expr);
 			} else if ( expr instanceof CommentNodeStep) {
 				visit ( (CommentNodeStep)expr);
 			} else if ( expr instanceof AllNodeStep) {
 				visit ( (AllNodeStep) expr);
 			} else if ( expr instanceof AdditiveExpr) {
 				visit ( (AdditiveExpr) expr);
 			} else if (expr instanceof List) {
 				visitList((List)expr);
 			} else if (expr != null) {
 				out("Panic: Unknown expression kind {0} ",expr.getClass().getName()); //$NON-NLS-1$
 			} else {
 				out("null - unset");
 			}

 			offset -= 2;
 		}


 		void out ( String msg, Object ... args ) {

 			for(int i=0; i < offset; i++) {
 				System.out.print(' ');
 			}
 			pl (msg,args);
 		}

 	}


 }
	/*******************************************************************************
	* Copyright (c) 2006 Oracle Corporation and others.
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License v1.0
	* which accompanies this distribution, and is available at
	* http://www.eclipse.org/legal/epl-v10.html
	*
	* Contributors:
	* Oracle Corporation - initial API and implementation
	*******************************************************************************/
	package org.eclipse.bpel.validator.xpath;

	import java.io.IOException;
	import java.text.MessageFormat;
	import java.util.Iterator;
	import java.util.List;

	import org.eclipse.bpel.xpath10.*;
	import org.eclipse.bpel.xpath10.parser.XPath10Exception;
	import org.eclipse.bpel.xpath10.parser.XPath10Factory;

	/**
	* @author Michal Chmielewski (michal.chmielewski@oracle.com)
	* @date Oct 17, 2006
	*
	*/

	@SuppressWarnings({"nls","boxing"})

	public class Main {

	/**
	* @param argv
	* @throws Exception
	*/
	static public void main (String argv[]) throws Exception {

	Main main = new Main();
	main.prompt ();
	}



	void prompt () throws IOException {

	int ch = 0;
	Walker visitor = new Walker();

	while (ch != -1) {

	p("XPath> ");
	StringBuilder buf = new StringBuilder(100);
	ch = System.in.read();
	while (ch != '\n' && ch != (-1) ) {
	buf.append((char) ch);
	ch = System.in.read();
	}
	String xpath = buf.toString().trim();
	if (xpath.length() == 0) {
	continue;
	}

	Expr expr = null;
	try {
	expr = XPath10Factory.create ( xpath );
	} catch (XPath10Exception t) {
	pl("error: ... cannot create XPath expression"); //$NON-NLS-1$
	System.out.println(xpath);
	for(int i=0,j=t.getPosition(); i <= j; i++) {
	System.out.print(" ");
	}
	pl("^^^ {0}",t.getMessage());
	continue;
	}
	visitor.visit( expr );
	}
	}


	static void p (String msg, Object ... args ) {
	String text = MessageFormat.format(msg, args);
	System.out.print(text);
	System.out.flush();
	}


	static void pl (String msg, Object ... args ) {
	p(msg,args);
	System.out.println(""); //$NON-NLS-1$
	System.out.flush();
	}



	class Walker {

	int offset = 0;

	/** (non-Javadoc)
	* @see org.jaxen.expr.VisitorSupport#visit(org.jaxen.expr.AdditiveExpr)
	*/
	protected void visit (AdditiveExpr arg0) {


	out("{0}: op={1} text={2}",
	arg0.getClass().getSimpleName(),
	arg0.getOperator(),
	arg0.getText() );
	out("LHS:");
	visit(arg0.getLHS());
	out("RHS:");
	visit(arg0.getRHS());
	}


	protected void visit(AllNodeStep arg0) {



	out("{0}: axis={1}, text={2}",
	arg0.getClass().getSimpleName(),
	arg0.getAxis(),
	arg0.getText());
	out("predicates:");
	visitList(arg0.getPredicates());

	}



	protected void visit(CommentNodeStep arg0) {


	out("{0}: {1}",arg0.getClass().getSimpleName(),arg0.getText());
	out("predicates:");
	visitList(arg0.getPredicates());
	}

	protected void visit(EqualityExpr arg0) {


	out("{0}: op={1} text={2}",
	arg0.getClass().getSimpleName(),
	arg0.getOperator(),
	arg0.getText() );
	out("LHS:");
	visit(arg0.getLHS());
	out("RHS:");
	visit(arg0.getRHS());
	}


	protected void visit(FilterExpr arg0) {


	out("{0}: text={1}",arg0.getClass().getSimpleName(),arg0.getText());
	out("expression:");
	visit(arg0.getExpr());
	out("predicates:");
	visitList(arg0.getPredicates());

	}

	protected void visit(FunctionCallExpr arg0) {


	out("{0}: name={1}, prefix={2}, #arguments={3}, text={4}", //$NON-NLS-1$
	arg0.getClass().getSimpleName(),
	arg0.getFunctionName(),
	arg0.getPrefix(),
	arg0.getParameters().size(),
	arg0.getText());
	out("arguments:");
	visitList(arg0.getParameters());
	}


	protected void visit(LiteralExpr arg0) {


	out("{0}: literal={1}, text={2}",
	arg0.getClass().getSimpleName(),
	arg0.getLiteral(),
	arg0.getText());
	}


	protected void visit (LocationPath arg0) {
	out("{0}: text={1}",arg0.getClass().getSimpleName(),arg0.getText());
	out("steps:");
	visitList(arg0.getSteps());

	}


	protected void visit(LogicalExpr arg0) {


	out("{0}: op={1} text={2}",
	arg0.getClass().getSimpleName(),
	arg0.getOperator(),
	arg0.getText() );

	out("LHS:");
	visit(arg0.getLHS());
	out("RHS:");
	visit(arg0.getRHS());
	}


	protected void visit (MultiplicativeExpr arg0) {



	out("{0}: op={1} text={2}",
	arg0.getClass().getSimpleName(),
	arg0.getOperator(),
	arg0.getText() );
	out("LHS:");
	visit(arg0.getLHS());
	out("RHS:");
	visit(arg0.getRHS());
	}


	protected void visit(NameStep arg0) {


	out("{0}: axis={1}, name={2}, prefix={3}, text={4}",
	arg0.getClass().getSimpleName(),
	arg0.getAxis(),
	arg0.getLocalName(),
	arg0.getPrefix(),
	arg0.getText());
	out("predicates:");
	visitList(arg0.getPredicates());
	}


	protected void visit(NumberExpr arg0) {


	out("{0}: {1}",arg0.getClass().getSimpleName(),arg0.getNumber());
	}


	protected void visit(PathExpr arg0) {


	out("{0}: text={1}",arg0.getClass().getSimpleName(),arg0.getText());
	out("filterExpr:");
	visit ( arg0.getFilterExpr() );

	out("locationPath:");
	visit ( arg0.getLocationPath() );
	}


	protected void visit(Predicate arg0) {


	out("{0}: text={1}",arg0.getClass().getSimpleName(),arg0.getText());
	out("expression:");
	visit(arg0.getExpr());
	}


	protected void visit(ProcessingInstructionNodeStep arg0) {
	out("{0}: name={1}, axis={2}, text={3}",arg0.getClass().getSimpleName(),
	arg0.getName(),
	arg0.getAxis(),
	arg0.getText());
	out("predicates:");

	visitList(arg0.getPredicates());
	}


	protected void visit(RelationalExpr arg0) {
	out("{0}: op={1} text={2}",
	arg0.getClass().getSimpleName(),
	arg0.getOperator(),
	arg0.getText() );
	out("LHS:");
	visit(arg0.getLHS());
	out("RHS:");
	visit(arg0.getRHS());
	}


	protected void visit(TextNodeStep arg0) {
	out("{0}: axis={1}, text={2}",
	arg0.getClass().getSimpleName(),
	arg0.getAxis(),
	arg0.getText());
	out("predicates:");
	visitList(arg0.getPredicates());
	}


	protected void visit(UnaryExpr arg0) {


	out("{0}: text={1}",arg0.getClass().getSimpleName(),arg0.getText() ) ;
	out("expression:");
	visit(arg0.getExpr());
	}

	protected void visit(UnionExpr arg0) {
	out("{0}: text={1}",
	arg0.getClass().getSimpleName(),
	arg0.getText() );
	out("LHS:");
	visit(arg0.getLHS());
	out("RHS:");
	visit(arg0.getRHS());
	}

	/** (non-Javadoc)
	* @see org.jaxen.expr.VisitorSupport#visit(org.jaxen.expr.VariableReferenceExpr)
	*/

	protected void visit(VariableReferenceExpr arg0) {


	out("{0}: variable={1}, prefix={2}, text={3}",arg0.getClass().getSimpleName(),
	arg0.getVariableName(),
	arg0.getPrefix(),
	arg0.getText());
	}






	protected void visitList (List<?> list) {
	offset += 3;
	Iterator<?> it = list.iterator();
	while (it.hasNext()) {
	visit(it.next());
	}
	offset -= 3;
	}

	/**
	* Visit the generic expression.
	*
	* @param expr
	*/

	public void visit (Object expr) {

	offset += 2;

	if (expr instanceof VariableReferenceExpr) {
	visit ( (VariableReferenceExpr) expr);
	} else if (expr instanceof UnionExpr) {
	visit ( (UnionExpr) expr);
	} else if ( expr instanceof UnaryExpr) {
	visit ( (UnaryExpr) expr);
	} else if ( expr instanceof TextNodeStep ) {
	visit ( (TextNodeStep) expr) ;
	} else if ( expr instanceof RelationalExpr) {
	visit ( (RelationalExpr) expr);
	} else if ( expr instanceof ProcessingInstructionNodeStep) {
	visit ( (ProcessingInstructionNodeStep) expr) ;
	} else if ( expr instanceof Predicate) {
	visit ( (Predicate) expr );
	} else if ( expr instanceof PathExpr) {
	visit ( (PathExpr) expr) ;
	} else if ( expr instanceof NumberExpr) {
	visit ( (NumberExpr) expr);
	} else if ( expr instanceof NameStep) {
	visit ( (NameStep) expr);
	} else if ( expr instanceof MultiplicativeExpr) {
	visit ( (MultiplicativeExpr) expr);
	} else if ( expr instanceof LogicalExpr) {
	visit ( (LogicalExpr) expr);
	} else if ( expr instanceof LocationPath) {
	visit ( (LocationPath) expr);
	} else if ( expr instanceof LiteralExpr) {
	visit ( (LiteralExpr) expr);
	} else if ( expr instanceof FunctionCallExpr) {
	visit ( (FunctionCallExpr) expr);
	} else if ( expr instanceof FilterExpr) {
	visit ( (FilterExpr) expr);
	} else if ( expr instanceof EqualityExpr) {
	visit ( (EqualityExpr) expr);
	} else if ( expr instanceof CommentNodeStep) {
	visit ( (CommentNodeStep)expr);
	} else if ( expr instanceof AllNodeStep) {
	visit ( (AllNodeStep) expr);
	} else if ( expr instanceof AdditiveExpr) {
	visit ( (AdditiveExpr) expr);
	} else if (expr instanceof List) {
	visitList((List)expr);
	} else if (expr != null) {
	out("Panic: Unknown expression kind {0} ",expr.getClass().getName()); //$NON-NLS-1$
	} else {
	out("null - unset");
	}

	offset -= 2;
	}



	void out ( String msg, Object ... args ) {

	for(int i=0; i < offset; i++) {
	System.out.print(' ');
	}
	pl (msg,args);
	}

	}



	}