1:33 p.m.
Problem with "!=" field constraint
----------------------------------
Key: JBRULES-1079
URL: http://jira.jboss.com/jira/browse/JBRULES-1079
Project: JBoss Rules
Issue Type: Bug
Security Level: Public (Everyone can see)
Affects Versions: 4.0.0.GA
Reporter: Markus Reitz
Assigned To: Mark Proctor
The following code illustrates the problem.
import org.drools.*;
import org.drools.compiler.*;
import org.drools.rule.Package;
import java.io.*;
public class DroolsTest {
private RuleBase rules;
private StatefulSession memory;
public DroolsTest(File file) throws Exception {
rules =RuleBaseFactory.newRuleBase();
memory=rules.newStatefulSession();
rules.addPackage(loadPackage(file));
}
protected Package loadPackage(File file) throws IOException {
FileInputStream stream=null;
try {
stream=new FileInputStream(file);
return(loadPackage(stream));
}
finally {
if (stream!=null)
stream.close();
}
}
protected Package loadPackage(InputStream stream) throws IOException {
try {
PackageBuilder builder=new PackageBuilder();
builder.addPackageFromDrl(new InputStreamReader(stream));
return(builder.getPackage());
}
catch(Exception ex) {
throw new IOException();
}
}
public StatefulSession getSession() {
return(memory);
}
public static void main(String ... args) {
try {
DroolsTest test=new DroolsTest(new File(args[0]));
SpecialString first42 =new SpecialString("42");
SpecialString second42=new SpecialString("42");
test.getSession().insert(new SpecialString("World"));
test.getSession().insert(first42);
test.getSession().insert(second42);
System.out.println("Fact handle:
"+test.getSession().getFactHandle(first42));
System.out.println("Fact handle:
"+test.getSession().getFactHandle(second42));
System.out.println("Firing rules ...");
test.getSession().fireAllRules();
}
catch (Exception ex) {
ex.printStackTrace();
}
}
}
In the above example, three different objects are created and inserted into the working
memory of the Drools Engine. Two of the three objects have the same text -
"42".
The class SpecialString uses the standard equals(...) and hashCode(...) implementation:
public class SpecialString {
private String text;
public SpecialString(String text) {
this.text=text;
}
public String getText() {
return(text);
}
@Override public String toString() {
return(getText()+"["+super.toString()+"]");
}
}
For the rule
package test
rule "A test"
when
x : SpecialString()
y : SpecialString(this!=x)
then
System.out.println(x+"/"+y);
end
The output is
Fact handle: [fid:2:2:42[SpecialString@fde8da]]
Fact handle: [fid:3:3:42[SpecialString@e4d6ef]]
Firing rules ...
42[SpecialString@e4d6ef]/World[SpecialString@faa824]
World[SpecialString@faa824]/42[SpecialString@e4d6ef]
42[SpecialString@fde8da]/World[SpecialString@faa824]
World[SpecialString@faa824]/42[SpecialString@fde8da]
I would expect that
42[SpecialString@e4d6ef]/42[SpecialString@fde8da]
42[SpecialString@fde8da]/42[SpecialString@e4d6ef]
is also contained in the output, but this is not the case.
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2:01 p.m.
New subject: [JBoss JIRA] Assigned: (JBRULES-1079) Problem with "!=" field constraint
[ http://jira.jboss.com/jira/browse/JBRULES-1079?page=all ]
Edson Tirelli reassigned JBRULES-1079:
--------------------------------------
Assignee: Edson Tirelli (was: Mark Proctor)
Problem with "!=" field constraint
----------------------------------
Key: JBRULES-1079
URL: http://jira.jboss.com/jira/browse/JBRULES-1079
Project: JBoss Rules
Issue Type: Bug
Security Level: Public(Everyone can see)
Affects Versions: 4.0.0.GA
Reporter: Markus Reitz
Assigned To: Edson Tirelli
The following code illustrates the problem.
import org.drools.*;
import org.drools.compiler.*;
import org.drools.rule.Package;
import java.io.*;
public class DroolsTest {
private RuleBase rules;
private StatefulSession memory;
public DroolsTest(File file) throws Exception {
rules =RuleBaseFactory.newRuleBase();
memory=rules.newStatefulSession();
rules.addPackage(loadPackage(file));
}
protected Package loadPackage(File file) throws IOException {
FileInputStream stream=null;
try {
stream=new FileInputStream(file);
return(loadPackage(stream));
}
finally {
if (stream!=null)
stream.close();
}
}
protected Package loadPackage(InputStream stream) throws IOException {
try {
PackageBuilder builder=new PackageBuilder();
builder.addPackageFromDrl(new InputStreamReader(stream));
return(builder.getPackage());
}
catch(Exception ex) {
throw new IOException();
}
}
public StatefulSession getSession() {
return(memory);
}
public static void main(String ... args) {
try {
DroolsTest test=new DroolsTest(new File(args[0]));
SpecialString first42 =new SpecialString("42");
SpecialString second42=new SpecialString("42");
test.getSession().insert(new SpecialString("World"));
test.getSession().insert(first42);
test.getSession().insert(second42);
System.out.println("Fact handle:
"+test.getSession().getFactHandle(first42));
System.out.println("Fact handle:
"+test.getSession().getFactHandle(second42));
System.out.println("Firing rules ...");
test.getSession().fireAllRules();
}
catch (Exception ex) {
ex.printStackTrace();
}
}
}
In the above example, three different objects are created and inserted into the working
memory of the Drools Engine. Two of the three objects have the same text -
"42".
The class SpecialString uses the standard equals(...) and hashCode(...) implementation:
public class SpecialString {
private String text;
public SpecialString(String text) {
this.text=text;
}
public String getText() {
return(text);
}
@Override public String toString() {
return(getText()+"["+super.toString()+"]");
}
}
For the rule
package test
rule "A test"
when
x : SpecialString()
y : SpecialString(this!=x)
then
System.out.println(x+"/"+y);
end
The output is
Fact handle: [fid:2:2:42[SpecialString@fde8da]]
Fact handle: [fid:3:3:42[SpecialString@e4d6ef]]
Firing rules ...
42[SpecialString@e4d6ef]/World[SpecialString@faa824]
World[SpecialString@faa824]/42[SpecialString@e4d6ef]
42[SpecialString@fde8da]/World[SpecialString@faa824]
World[SpecialString@faa824]/42[SpecialString@fde8da]
I would expect that
42[SpecialString@e4d6ef]/42[SpecialString@fde8da]
42[SpecialString@fde8da]/42[SpecialString@e4d6ef]
is also contained in the output, but this is not the case.
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8:25 p.m.
New subject: [JBoss JIRA] Updated: (JBRULES-1079) Problem with "!=" field constraint
[ http://jira.jboss.com/jira/browse/JBRULES-1079?page=all ]
Mark Proctor updated JBRULES-1079:
----------------------------------
Fix Version/s: 4.0.1
Problem with "!=" field constraint
----------------------------------
Key: JBRULES-1079
URL: http://jira.jboss.com/jira/browse/JBRULES-1079
Project: JBoss Rules
Issue Type: Bug
Security Level: Public(Everyone can see)
Affects Versions: 4.0.0.GA
Reporter: Markus Reitz
Assigned To: Edson Tirelli
Fix For: 4.0.1
The following code illustrates the problem.
import org.drools.*;
import org.drools.compiler.*;
import org.drools.rule.Package;
import java.io.*;
public class DroolsTest {
private RuleBase rules;
private StatefulSession memory;
public DroolsTest(File file) throws Exception {
rules =RuleBaseFactory.newRuleBase();
memory=rules.newStatefulSession();
rules.addPackage(loadPackage(file));
}
protected Package loadPackage(File file) throws IOException {
FileInputStream stream=null;
try {
stream=new FileInputStream(file);
return(loadPackage(stream));
}
finally {
if (stream!=null)
stream.close();
}
}
protected Package loadPackage(InputStream stream) throws IOException {
try {
PackageBuilder builder=new PackageBuilder();
builder.addPackageFromDrl(new InputStreamReader(stream));
return(builder.getPackage());
}
catch(Exception ex) {
throw new IOException();
}
}
public StatefulSession getSession() {
return(memory);
}
public static void main(String ... args) {
try {
DroolsTest test=new DroolsTest(new File(args[0]));
SpecialString first42 =new SpecialString("42");
SpecialString second42=new SpecialString("42");
test.getSession().insert(new SpecialString("World"));
test.getSession().insert(first42);
test.getSession().insert(second42);
System.out.println("Fact handle:
"+test.getSession().getFactHandle(first42));
System.out.println("Fact handle:
"+test.getSession().getFactHandle(second42));
System.out.println("Firing rules ...");
test.getSession().fireAllRules();
}
catch (Exception ex) {
ex.printStackTrace();
}
}
}
In the above example, three different objects are created and inserted into the working
memory of the Drools Engine. Two of the three objects have the same text -
"42".
The class SpecialString uses the standard equals(...) and hashCode(...) implementation:
public class SpecialString {
private String text;
public SpecialString(String text) {
this.text=text;
}
public String getText() {
return(text);
}
@Override public String toString() {
return(getText()+"["+super.toString()+"]");
}
}
For the rule
package test
rule "A test"
when
x : SpecialString()
y : SpecialString(this!=x)
then
System.out.println(x+"/"+y);
end
The output is
Fact handle: [fid:2:2:42[SpecialString@fde8da]]
Fact handle: [fid:3:3:42[SpecialString@e4d6ef]]
Firing rules ...
42[SpecialString@e4d6ef]/World[SpecialString@faa824]
World[SpecialString@faa824]/42[SpecialString@e4d6ef]
42[SpecialString@fde8da]/World[SpecialString@faa824]
World[SpecialString@faa824]/42[SpecialString@fde8da]
I would expect that
42[SpecialString@e4d6ef]/42[SpecialString@fde8da]
42[SpecialString@fde8da]/42[SpecialString@e4d6ef]
is also contained in the output, but this is not the case.
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10:17 p.m.
New subject: [JBoss JIRA] Commented: (JBRULES-1079) Problem with "!=" field constraint
[ http://jira.jboss.com/jira/browse/JBRULES-1079?page=comments#action_12372439 ]
Mark Proctor commented on JBRULES-1079:
---------------------------------------
You'll get a full cross product. I changed it from two 42 numbers to a 42 and a 42.
here is my output, which is correct.
43[org.drools.SpecialString@111b910]/42[org.drools.SpecialString(a)e79839]
42[org.drools.SpecialString@e79839]/43[org.drools.SpecialString(a)111b910]
World[org.drools.SpecialString@1d36dfe]/43[org.drools.SpecialString(a)111b910]
43[org.drools.SpecialString@111b910]/World[org.drools.SpecialString(a)1d36dfe]
42[org.drools.SpecialString@e79839]/World[org.drools.SpecialString(a)1d36dfe]
World[org.drools.SpecialString@1d36dfe]/42[org.drools.SpecialString(a)e79839]
Which is what you would expect you have 3 different objects and its going to produce all
possible cross procuts, only the this!=x stops it producing a cross product with identity
equals objects for x and y.
Problem with "!=" field constraint
----------------------------------
Key: JBRULES-1079
URL: http://jira.jboss.com/jira/browse/JBRULES-1079
Project: JBoss Rules
Issue Type: Bug
Security Level: Public(Everyone can see)
Affects Versions: 4.0.0.GA
Reporter: Markus Reitz
Assigned To: Edson Tirelli
Fix For: 4.0.1
The following code illustrates the problem.
import org.drools.*;
import org.drools.compiler.*;
import org.drools.rule.Package;
import java.io.*;
public class DroolsTest {
private RuleBase rules;
private StatefulSession memory;
public DroolsTest(File file) throws Exception {
rules =RuleBaseFactory.newRuleBase();
memory=rules.newStatefulSession();
rules.addPackage(loadPackage(file));
}
protected Package loadPackage(File file) throws IOException {
FileInputStream stream=null;
try {
stream=new FileInputStream(file);
return(loadPackage(stream));
}
finally {
if (stream!=null)
stream.close();
}
}
protected Package loadPackage(InputStream stream) throws IOException {
try {
PackageBuilder builder=new PackageBuilder();
builder.addPackageFromDrl(new InputStreamReader(stream));
return(builder.getPackage());
}
catch(Exception ex) {
throw new IOException();
}
}
public StatefulSession getSession() {
return(memory);
}
public static void main(String ... args) {
try {
DroolsTest test=new DroolsTest(new File(args[0]));
SpecialString first42 =new SpecialString("42");
SpecialString second42=new SpecialString("42");
test.getSession().insert(new SpecialString("World"));
test.getSession().insert(first42);
test.getSession().insert(second42);
System.out.println("Fact handle:
"+test.getSession().getFactHandle(first42));
System.out.println("Fact handle:
"+test.getSession().getFactHandle(second42));
System.out.println("Firing rules ...");
test.getSession().fireAllRules();
}
catch (Exception ex) {
ex.printStackTrace();
}
}
}
In the above example, three different objects are created and inserted into the working
memory of the Drools Engine. Two of the three objects have the same text -
"42".
The class SpecialString uses the standard equals(...) and hashCode(...) implementation:
public class SpecialString {
private String text;
public SpecialString(String text) {
this.text=text;
}
public String getText() {
return(text);
}
@Override public String toString() {
return(getText()+"["+super.toString()+"]");
}
}
For the rule
package test
rule "A test"
when
x : SpecialString()
y : SpecialString(this!=x)
then
System.out.println(x+"/"+y);
end
The output is
Fact handle: [fid:2:2:42[SpecialString@fde8da]]
Fact handle: [fid:3:3:42[SpecialString@e4d6ef]]
Firing rules ...
42[SpecialString@e4d6ef]/World[SpecialString@faa824]
World[SpecialString@faa824]/42[SpecialString@e4d6ef]
42[SpecialString@fde8da]/World[SpecialString@faa824]
World[SpecialString@faa824]/42[SpecialString@fde8da]
I would expect that
42[SpecialString@e4d6ef]/42[SpecialString@fde8da]
42[SpecialString@fde8da]/42[SpecialString@e4d6ef]
is also contained in the output, but this is not the case.
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10:19 p.m.
New subject: [JBoss JIRA] Closed: (JBRULES-1079) Problem with "!=" field constraint
[ http://jira.jboss.com/jira/browse/JBRULES-1079?page=all ]
Mark Proctor closed JBRULES-1079.
---------------------------------
Resolution: Rejected
Could not reproduce
Problem with "!=" field constraint
----------------------------------
Key: JBRULES-1079
URL: http://jira.jboss.com/jira/browse/JBRULES-1079
Project: JBoss Rules
Issue Type: Bug
Security Level: Public(Everyone can see)
Affects Versions: 4.0.0.GA
Reporter: Markus Reitz
Assigned To: Edson Tirelli
Fix For: 4.0.1
The following code illustrates the problem.
import org.drools.*;
import org.drools.compiler.*;
import org.drools.rule.Package;
import java.io.*;
public class DroolsTest {
private RuleBase rules;
private StatefulSession memory;
public DroolsTest(File file) throws Exception {
rules =RuleBaseFactory.newRuleBase();
memory=rules.newStatefulSession();
rules.addPackage(loadPackage(file));
}
protected Package loadPackage(File file) throws IOException {
FileInputStream stream=null;
try {
stream=new FileInputStream(file);
return(loadPackage(stream));
}
finally {
if (stream!=null)
stream.close();
}
}
protected Package loadPackage(InputStream stream) throws IOException {
try {
PackageBuilder builder=new PackageBuilder();
builder.addPackageFromDrl(new InputStreamReader(stream));
return(builder.getPackage());
}
catch(Exception ex) {
throw new IOException();
}
}
public StatefulSession getSession() {
return(memory);
}
public static void main(String ... args) {
try {
DroolsTest test=new DroolsTest(new File(args[0]));
SpecialString first42 =new SpecialString("42");
SpecialString second42=new SpecialString("42");
test.getSession().insert(new SpecialString("World"));
test.getSession().insert(first42);
test.getSession().insert(second42);
System.out.println("Fact handle:
"+test.getSession().getFactHandle(first42));
System.out.println("Fact handle:
"+test.getSession().getFactHandle(second42));
System.out.println("Firing rules ...");
test.getSession().fireAllRules();
}
catch (Exception ex) {
ex.printStackTrace();
}
}
}
In the above example, three different objects are created and inserted into the working
memory of the Drools Engine. Two of the three objects have the same text -
"42".
The class SpecialString uses the standard equals(...) and hashCode(...) implementation:
public class SpecialString {
private String text;
public SpecialString(String text) {
this.text=text;
}
public String getText() {
return(text);
}
@Override public String toString() {
return(getText()+"["+super.toString()+"]");
}
}
For the rule
package test
rule "A test"
when
x : SpecialString()
y : SpecialString(this!=x)
then
System.out.println(x+"/"+y);
end
The output is
Fact handle: [fid:2:2:42[SpecialString@fde8da]]
Fact handle: [fid:3:3:42[SpecialString@e4d6ef]]
Firing rules ...
42[SpecialString@e4d6ef]/World[SpecialString@faa824]
World[SpecialString@faa824]/42[SpecialString@e4d6ef]
42[SpecialString@fde8da]/World[SpecialString@faa824]
World[SpecialString@faa824]/42[SpecialString@fde8da]
I would expect that
42[SpecialString@e4d6ef]/42[SpecialString@fde8da]
42[SpecialString@fde8da]/42[SpecialString@e4d6ef]
is also contained in the output, but this is not the case.
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10:52 p.m.
New subject: [JBoss JIRA] Commented: (JBRULES-1079) Problem with "!=" field constraint
[ http://jira.jboss.com/jira/browse/JBRULES-1079?page=comments#action_12372441 ]
Mark Proctor commented on JBRULES-1079:
---------------------------------------
I couldn't reproduce this but added this as an itnegration test anyway. see
MiscTest.testCrossProductRemovingIdentityEquals()
Problem with "!=" field constraint
----------------------------------
Key: JBRULES-1079
URL: http://jira.jboss.com/jira/browse/JBRULES-1079
Project: JBoss Rules
Issue Type: Bug
Security Level: Public(Everyone can see)
Affects Versions: 4.0.0.GA
Reporter: Markus Reitz
Assigned To: Edson Tirelli
Fix For: 4.0.1
The following code illustrates the problem.
import org.drools.*;
import org.drools.compiler.*;
import org.drools.rule.Package;
import java.io.*;
public class DroolsTest {
private RuleBase rules;
private StatefulSession memory;
public DroolsTest(File file) throws Exception {
rules =RuleBaseFactory.newRuleBase();
memory=rules.newStatefulSession();
rules.addPackage(loadPackage(file));
}
protected Package loadPackage(File file) throws IOException {
FileInputStream stream=null;
try {
stream=new FileInputStream(file);
return(loadPackage(stream));
}
finally {
if (stream!=null)
stream.close();
}
}
protected Package loadPackage(InputStream stream) throws IOException {
try {
PackageBuilder builder=new PackageBuilder();
builder.addPackageFromDrl(new InputStreamReader(stream));
return(builder.getPackage());
}
catch(Exception ex) {
throw new IOException();
}
}
public StatefulSession getSession() {
return(memory);
}
public static void main(String ... args) {
try {
DroolsTest test=new DroolsTest(new File(args[0]));
SpecialString first42 =new SpecialString("42");
SpecialString second42=new SpecialString("42");
test.getSession().insert(new SpecialString("World"));
test.getSession().insert(first42);
test.getSession().insert(second42);
System.out.println("Fact handle:
"+test.getSession().getFactHandle(first42));
System.out.println("Fact handle:
"+test.getSession().getFactHandle(second42));
System.out.println("Firing rules ...");
test.getSession().fireAllRules();
}
catch (Exception ex) {
ex.printStackTrace();
}
}
}
In the above example, three different objects are created and inserted into the working
memory of the Drools Engine. Two of the three objects have the same text -
"42".
The class SpecialString uses the standard equals(...) and hashCode(...) implementation:
public class SpecialString {
private String text;
public SpecialString(String text) {
this.text=text;
}
public String getText() {
return(text);
}
@Override public String toString() {
return(getText()+"["+super.toString()+"]");
}
}
For the rule
package test
rule "A test"
when
x : SpecialString()
y : SpecialString(this!=x)
then
System.out.println(x+"/"+y);
end
The output is
Fact handle: [fid:2:2:42[SpecialString@fde8da]]
Fact handle: [fid:3:3:42[SpecialString@e4d6ef]]
Firing rules ...
42[SpecialString@e4d6ef]/World[SpecialString@faa824]
World[SpecialString@faa824]/42[SpecialString@e4d6ef]
42[SpecialString@fde8da]/World[SpecialString@faa824]
World[SpecialString@faa824]/42[SpecialString@fde8da]
I would expect that
42[SpecialString@e4d6ef]/42[SpecialString@fde8da]
42[SpecialString@fde8da]/42[SpecialString@e4d6ef]
is also contained in the output, but this is not the case.
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1:13 p.m.
New subject: [JBoss JIRA] Reopened: (JBRULES-1079) Problem with "!=" field constraint
[ http://jira.jboss.com/jira/browse/JBRULES-1079?page=all ]
Edson Tirelli reopened JBRULES-1079:
------------------------------------
Reproduced the problem.
Problem with "!=" field constraint
----------------------------------
Key: JBRULES-1079
URL: http://jira.jboss.com/jira/browse/JBRULES-1079
Project: JBoss Rules
Issue Type: Bug
Security Level: Public(Everyone can see)
Affects Versions: 4.0.0.GA
Reporter: Markus Reitz
Assigned To: Edson Tirelli
Fix For: 4.0.1
The following code illustrates the problem.
import org.drools.*;
import org.drools.compiler.*;
import org.drools.rule.Package;
import java.io.*;
public class DroolsTest {
private RuleBase rules;
private StatefulSession memory;
public DroolsTest(File file) throws Exception {
rules =RuleBaseFactory.newRuleBase();
memory=rules.newStatefulSession();
rules.addPackage(loadPackage(file));
}
protected Package loadPackage(File file) throws IOException {
FileInputStream stream=null;
try {
stream=new FileInputStream(file);
return(loadPackage(stream));
}
finally {
if (stream!=null)
stream.close();
}
}
protected Package loadPackage(InputStream stream) throws IOException {
try {
PackageBuilder builder=new PackageBuilder();
builder.addPackageFromDrl(new InputStreamReader(stream));
return(builder.getPackage());
}
catch(Exception ex) {
throw new IOException();
}
}
public StatefulSession getSession() {
return(memory);
}
public static void main(String ... args) {
try {
DroolsTest test=new DroolsTest(new File(args[0]));
SpecialString first42 =new SpecialString("42");
SpecialString second42=new SpecialString("42");
test.getSession().insert(new SpecialString("World"));
test.getSession().insert(first42);
test.getSession().insert(second42);
System.out.println("Fact handle:
"+test.getSession().getFactHandle(first42));
System.out.println("Fact handle:
"+test.getSession().getFactHandle(second42));
System.out.println("Firing rules ...");
test.getSession().fireAllRules();
}
catch (Exception ex) {
ex.printStackTrace();
}
}
}
In the above example, three different objects are created and inserted into the working
memory of the Drools Engine. Two of the three objects have the same text -
"42".
The class SpecialString uses the standard equals(...) and hashCode(...) implementation:
public class SpecialString {
private String text;
public SpecialString(String text) {
this.text=text;
}
public String getText() {
return(text);
}
@Override public String toString() {
return(getText()+"["+super.toString()+"]");
}
}
For the rule
package test
rule "A test"
when
x : SpecialString()
y : SpecialString(this!=x)
then
System.out.println(x+"/"+y);
end
The output is
Fact handle: [fid:2:2:42[SpecialString@fde8da]]
Fact handle: [fid:3:3:42[SpecialString@e4d6ef]]
Firing rules ...
42[SpecialString@e4d6ef]/World[SpecialString@faa824]
World[SpecialString@faa824]/42[SpecialString@e4d6ef]
42[SpecialString@fde8da]/World[SpecialString@faa824]
World[SpecialString@faa824]/42[SpecialString@fde8da]
I would expect that
42[SpecialString@e4d6ef]/42[SpecialString@fde8da]
42[SpecialString@fde8da]/42[SpecialString@e4d6ef]
is also contained in the output, but this is not the case.
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1:21 p.m.
New subject: [JBoss JIRA] Resolved: (JBRULES-1079) Problem with "!=" field constraint
[ http://jira.jboss.com/jira/browse/JBRULES-1079?page=all ]
Edson Tirelli resolved JBRULES-1079.
------------------------------------
Resolution: Done
I was able to reproduce the problem. It was a problem related to the shadow fact generated
equals() method. The method was being generated like this:
public boolean equals( Object object ) {
if ( this == object ||
this.delegate == object ||
this.delegate.equals( object ) ) {
return true;
}
if (( object == null ) || ( ! ( object instanceof <class> ) ) )
return false;
if( object instanceof ShadowProxy &&
( this.delegate == ((ShadowProxy)object).delegate ||
this.delegate.equals( ((ShadowProxy)object).delegate ) ) ) {
return true;
}
<class> other = (<class>) object;
// for each field:
if ( ! _fieldIsSet ) {
__field = this.delegate.method();
__fieldIsSet = true;
}
// for primitive types
if ( this.field != other.field )
return false;
// for non primitive types
if( ( ( this.field == null ) && ( other.field != null ) ) ||
( ( this.field != null ) && ( ! this.field.equals( other.field ) )
) )
return false;
// if all fields were ok
return true;
// or if no fields exists
return false;
}
I.e, after failing on previous checks, the shadow fact tried to compare the value for each
field, and in case they were all equal, it returned true, causing the unexpected behavior
when fields were set to the "42" value in your test.
I removed that part from the equals() method generation and now it is like this:
public boolean equals( Object object ) {
if ( this == object ||
this.delegate == object ||
this.delegate.equals( object ) ) {
return true;
}
if (( object == null ) || ( ! ( object instanceof <class> ) ) )
return false;
if( object instanceof ShadowProxy &&
( this.delegate == ((ShadowProxy)object).delegate ||
this.delegate.equals( ((ShadowProxy)object).delegate ) ) ) {
return true;
}
return false;
}
As all tests are green, I'm giving it a go and committing.
Please let us know if it fixes your problems.
Thanks for reporting and providing test case.
Problem with "!=" field constraint
----------------------------------
Key: JBRULES-1079
URL: http://jira.jboss.com/jira/browse/JBRULES-1079
Project: JBoss Rules
Issue Type: Bug
Security Level: Public(Everyone can see)
Affects Versions: 4.0.0.GA
Reporter: Markus Reitz
Assigned To: Edson Tirelli
Fix For: 4.0.1
The following code illustrates the problem.
import org.drools.*;
import org.drools.compiler.*;
import org.drools.rule.Package;
import java.io.*;
public class DroolsTest {
private RuleBase rules;
private StatefulSession memory;
public DroolsTest(File file) throws Exception {
rules =RuleBaseFactory.newRuleBase();
memory=rules.newStatefulSession();
rules.addPackage(loadPackage(file));
}
protected Package loadPackage(File file) throws IOException {
FileInputStream stream=null;
try {
stream=new FileInputStream(file);
return(loadPackage(stream));
}
finally {
if (stream!=null)
stream.close();
}
}
protected Package loadPackage(InputStream stream) throws IOException {
try {
PackageBuilder builder=new PackageBuilder();
builder.addPackageFromDrl(new InputStreamReader(stream));
return(builder.getPackage());
}
catch(Exception ex) {
throw new IOException();
}
}
public StatefulSession getSession() {
return(memory);
}
public static void main(String ... args) {
try {
DroolsTest test=new DroolsTest(new File(args[0]));
SpecialString first42 =new SpecialString("42");
SpecialString second42=new SpecialString("42");
test.getSession().insert(new SpecialString("World"));
test.getSession().insert(first42);
test.getSession().insert(second42);
System.out.println("Fact handle:
"+test.getSession().getFactHandle(first42));
System.out.println("Fact handle:
"+test.getSession().getFactHandle(second42));
System.out.println("Firing rules ...");
test.getSession().fireAllRules();
}
catch (Exception ex) {
ex.printStackTrace();
}
}
}
In the above example, three different objects are created and inserted into the working
memory of the Drools Engine. Two of the three objects have the same text -
"42".
The class SpecialString uses the standard equals(...) and hashCode(...) implementation:
public class SpecialString {
private String text;
public SpecialString(String text) {
this.text=text;
}
public String getText() {
return(text);
}
@Override public String toString() {
return(getText()+"["+super.toString()+"]");
}
}
For the rule
package test
rule "A test"
when
x : SpecialString()
y : SpecialString(this!=x)
then
System.out.println(x+"/"+y);
end
The output is
Fact handle: [fid:2:2:42[SpecialString@fde8da]]
Fact handle: [fid:3:3:42[SpecialString@e4d6ef]]
Firing rules ...
42[SpecialString@e4d6ef]/World[SpecialString@faa824]
World[SpecialString@faa824]/42[SpecialString@e4d6ef]
42[SpecialString@fde8da]/World[SpecialString@faa824]
World[SpecialString@faa824]/42[SpecialString@fde8da]
I would expect that
42[SpecialString@e4d6ef]/42[SpecialString@fde8da]
42[SpecialString@fde8da]/42[SpecialString@e4d6ef]
is also contained in the output, but this is not the case.
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6939
days inactive
6942
days old
7 comments
3 participants
participants (3)
-
Edson Tirelli (JIRA) -
Mark Proctor (JIRA)
-
Markus Reitz (JIRA)