Following tutorial1, I prepared an MsAccess database and a corresponding
class named com.spectrum.test.ColorBL and I put the ColorBL.java file
under <ojb-install-dir>\com\spectrum\test so that I classpath settings
be easy. I set thedbalias as, dbalias="colorojb".
ColorBL.java
package com.spectrum.test;
import org.apache.ojb.broker.PersistenceBroker;
import org.apache.ojb.broker.PersistenceBrokerFactory;
import org.apache.ojb.broker.util.ui.AsciiSplash;
import org.apache.ojb.broker.query.*;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.Collection;
import java.util.Vector;
public class ColorBL implements java.io.Serializable {
private String colr_text = "";
private String colr_name = "";
private int colr_rate = 0;
private String colr_rmrk = "";
private String oid = "";
/***********************/
PersistenceBroker broker = null;
/***********************/
public ColorBL() {
try
{
broker =
PersistenceBrokerFactory.createPersistenceBroker("repository.xml");
}
catch (Throwable t)
{
t.printStackTrace();
}
// useCases = new Vector();
// useCases.add(new UCListallColors(broker));
// useCases.add(new UCEnterNewProduct(broker));
// useCases.add(new UCDeleteProduct(broker));
// useCases.add(new UCQuitApplication(broker));
}
/***********************/
public ColorBL(boolean isNew) {
}
/***********************/
public String getDisplayString() {
return this.colr_name + "(" + this.colr_text + ")";
}
/***********************/
public void setColr_text(String value) {
colr_text = value;
}
public String getColr_text() {
return colr_text;
}
public void setColr_name(String value) {
colr_name = value;
}
public String getColr_name() {
return colr_name;
}
public void setColr_rate(int value) {
colr_rate = value;
}
public int getColr_rate() {
return colr_rate;
}
public void setColr_rmrk(String value) {
colr_rmrk = value;
}
public String getColr_rmrk() {
return colr_rmrk;
}
/***********************/
public void setOid(String value) {
oid = value;
}
/***********************/
public String getOid() {
return oid;
}
/***********************/
public void apply()
{
System.out.println("The list of available colors:");
// build a query that selects all objects of Class Product,
without any
// further criteria according to ODMG the Collection containing
all
// instances of a persistent class is called "Extent"
Query query = new QueryByCriteria(ColorBL.class, null);
try
{
// ask the broker to retrieve the Extent collection
Collection allColors = broker.getCollectionByQuery(query);
// now iterate over the result to print each product
java.util.Iterator iter = allColors.iterator();
while (iter.hasNext())
{
System.out.println(iter.next());
}
}
catch (Throwable t)
{
t.printStackTrace();
}
}
/***********************/
public static void main(String []args){
ColorBL colrBL = new ColorBL();
colrBL.apply();
}
/***********************/
/**
public org.jdom.Element toXML()
{
java.util.HashMap hmProperty = new java.util.HashMap();
hmProperty.put("oid", oid);
hmProperty.put("colr_text", colr_text);
hmProperty.put("colr_name", colr_name);
hmProperty.put("colr_rmrk", colr_rmrk);
return BLUtils.toXML("color", hmProperty);
}
*/
/***********************/
}
When I compile it reports ---
An exception has occurred in the compiler (1.3.1_02). Please file a bug
at th
java Developer Connection (http://java.sun.com/cgi-bin/bugreport.cgi).
Include
our program and the following diagnostic in your report. Thank you.
com.sun.tools.javac.v8.code.Symbol$CompletionFailure: file
javax\xml\parsers\
ParserConfigurationException.class not found
at
com.sun.tools.javac.v8.code.ClassReader.fillIn(ClassReader.java:99
at
com.sun.tools.javac.v8.code.ClassReader.complete(ClassReader.java:)
at com.sun.tools.javac.v8.code.Symbol.complete(Symbol.java:366)
at
com.sun.tools.javac.v8.code.Type$ClassType.supertype(Type.java:812
at
com.sun.tools.javac.v8.code.Symbol$ClassSymbol.isSubClass(Symbol.j:622)
at com.sun.tools.javac.v8.comp.Check.isUnchecked(Check.java:541)
at com.sun.tools.javac.v8.comp.Flow.markThrown(Flow.java:255)
at com.sun.tools.javac.v8.comp.Flow._case(Flow.java:748)
at com.sun.tools.javac.v8.tree.Tree$Apply.visit(Tree.java:785)
at com.sun.tools.javac.v8.comp.Flow.analyze(Flow.java:321)
at com.sun.tools.javac.v8.comp.Flow.analyzeExpr(Flow.java:339)
at com.sun.tools.javac.v8.comp.Flow._case(Flow.java:766)
at com.sun.tools.javac.v8.tree.Tree$Assign.visit(Tree.java:848)
at com.sun.tools.javac.v8.comp.Flow.analyze(Flow.java:321)
at com.sun.tools.javac.v8.comp.Flow.analyzeExpr(Flow.java:339)
at com.sun.tools.javac.v8.comp.Flow._case(Flow.java:719)
at com.sun.tools.javac.v8.tree.Tree$Exec.visit(Tree.java:699)
at com.sun.tools.javac.v8.comp.Flow.analyze(Flow.java:321)
at com.sun.tools.javac.v8.comp.Flow.analyzeStat(Flow.java:394)
at com.sun.tools.javac.v8.comp.Flow.analyzeStats(Flow.java:413)
at com.sun.tools.javac.v8.comp.Flow._case(Flow.java:520)
at com.sun.tools.javac.v8.tree.Tree$Block.visit(Tree.java:492)
at com.sun.tools.javac.v8.comp.Flow.analyze(Flow.java:321)
at com.sun.tools.javac.v8.comp.Flow.analyzeStat(Flow.java:394)
at com.sun.tools.javac.v8.comp.Flow._case(Flow.java:626)
at com.sun.tools.javac.v8.tree.Tree$Try.visit(Tree.java:642)
at com.sun.tools.javac.v8.comp.Flow.analyze(Flow.java:321)
at com.sun.tools.javac.v8.comp.Flow.analyzeStat(Flow.java:394)
at com.sun.tools.javac.v8.comp.Flow.analyzeStats(Flow.java:413)
at com.sun.tools.javac.v8.comp.Flow._case(Flow.java:520)
at com.sun.tools.javac.v8.tree.Tree$Block.visit(Tree.java:492)
at com.sun.tools.javac.v8.comp.Flow.analyze(Flow.java:321)
at com.sun.tools.javac.v8.comp.Flow.analyzeStat(Flow.java:394)
at com.sun.tools.javac.v8.comp.Flow._case(Flow.java:488)
at
com.sun.tools.javac.v8.tree.Tree$MethodDef.visit(Tree.java:441)
at com.sun.tools.javac.v8.comp.Flow.analyze(Flow.java:321)
at com.sun.tools.javac.v8.comp.Flow.analyzeDef(Flow.java:379)
at com.sun.tools.javac.v8.comp.Flow._case(Flow.java:456)
at
com.sun.tools.javac.v8.tree.Tree$ClassDef.visit(Tree.java:402)
at com.sun.tools.javac.v8.comp.Flow.analyze(Flow.java:321)
at com.sun.tools.javac.v8.comp.Flow.analyzeDef(Flow.java:379)
at
com.sun.tools.javac.v8.JavaCompiler.compile(JavaCompiler.java:380)
at com.sun.tools.javac.v8.Main.compile(Main.java:247)
at com.sun.tools.javac.Main.main(Main.java:16)
Then I have xalan, xerces in my classpath and again compiled but the
same result is shown. What�s the problem?
====================================
Muhammad Ashikuzzaman
Programmer, Spectrum Engineering Consortium Ltd.
[EMAIL PROTECTED]
