10:08 p.m.
FactTemplateFieldExtractor must implement equals() method
---------------------------------------------------------
Key: JBRULES-1817
URL: https://jira.jboss.org/jira/browse/JBRULES-1817
Project: JBoss Drools
Issue Type: Bug
Security Level: Public (Everyone can see)
Components: drools-core
Affects Versions: 4.0.7
Environment: Sun JDK1.5.0_12 on Windows XP
Reporter: Stephanie Kroll
Assignee: Mark Proctor
FactTemplateFieldExtractor does not implement equals(). This causes rules not to fire
when the number of literal string equality constraints equals or exceeds the alpha node
hashing threshold.
To reproduce for the trivial case, I created the following rule package:
package TestFactTemplate
template MyFact
String stringVal;
end
rule "Rule1"
when
MyFact (stringVal == "AA")
then
System.out.println("Rule1 fired");
end
rule "Rule2"
when
MyFact (stringVal == "AA")
then
System.out.println("Rule2 fired");
end
I implemented the Fact interface and returned "AA" from the two getFieldValue()
methods. I also set the alphaNodeHashingThreshold to 2. When executing the rules, only
Rule2 fires.
If FactTemplateFieldExtractor implements equals() like so:
public boolean equals(final Object object) {
if ( this == object ) {
return true;
}
if ( !(object instanceof FactTemplateFieldExtractor) ) {
return false;
}
final FactTemplateFieldExtractor other = (FactTemplateFieldExtractor) object;
return this.factTemplate.equals(other.factTemplate) &&
this.fieldIndex == other.fieldIndex;
}
then both rules fire.
The problem arises because without the equals() method for the field extractor, the
LiteralConstraints do not report as equal, and the network does not reuse the nodes in
BuildUtils.attachNode. When CompositeObjectSinkAdapter hashes the sinks because the
threshold is met, only the last one is preserved in the hashedSinkMap since the HashKeys
are the same.
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10:47 p.m.
New subject: [JBoss JIRA] Closed: (JBRULES-1817) FactTemplateFieldExtractor must implement equals() method
[
https://jira.jboss.org/jira/browse/JBRULES-1817?page=com.atlassian.jira.p...
]
Mark Proctor closed JBRULES-1817.
---------------------------------
Fix Version/s: 5.0.0.M5
Resolution: Done
FactTemplateFieldExtractor must implement equals() method
---------------------------------------------------------
Key: JBRULES-1817
URL: https://jira.jboss.org/jira/browse/JBRULES-1817
Project: JBoss Drools
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: drools-core
Affects Versions: 4.0.7
Environment: Sun JDK1.5.0_12 on Windows XP
Reporter: Stephanie Kroll
Assignee: Mark Proctor
Fix For: 5.0.0.M5
FactTemplateFieldExtractor does not implement equals(). This causes rules not to fire
when the number of literal string equality constraints equals or exceeds the alpha node
hashing threshold.
To reproduce for the trivial case, I created the following rule package:
package TestFactTemplate
template MyFact
String stringVal;
end
rule "Rule1"
when
MyFact (stringVal == "AA")
then
System.out.println("Rule1 fired");
end
rule "Rule2"
when
MyFact (stringVal == "AA")
then
System.out.println("Rule2 fired");
end
I implemented the Fact interface and returned "AA" from the two getFieldValue()
methods. I also set the alphaNodeHashingThreshold to 2. When executing the rules, only
Rule2 fires.
If FactTemplateFieldExtractor implements equals() like so:
public boolean equals(final Object object) {
if ( this == object ) {
return true;
}
if ( !(object instanceof FactTemplateFieldExtractor) ) {
return false;
}
final FactTemplateFieldExtractor other = (FactTemplateFieldExtractor) object;
return this.factTemplate.equals(other.factTemplate) &&
this.fieldIndex == other.fieldIndex;
}
then both rules fire.
The problem arises because without the equals() method for the field extractor, the
LiteralConstraints do not report as equal, and the network does not reuse the nodes in
BuildUtils.attachNode. When CompositeObjectSinkAdapter hashes the sinks because the
threshold is met, only the last one is preserved in the hashedSinkMap since the HashKeys
are the same.
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2:38 a.m.
New subject: [JBoss JIRA] Commented: (JBRULES-1817) FactTemplateFieldExtractor must implement equals() method
[
https://jira.jboss.org/jira/browse/JBRULES-1817?page=com.atlassian.jira.p...
]
Charles Daniels commented on JBRULES-1817:
------------------------------------------
We are using version 4.0.7 and are not ready to upgrade to 5.x. Would someone please port
this fix to 4.0.8?
FactTemplateFieldExtractor must implement equals() method
---------------------------------------------------------
Key: JBRULES-1817
URL: https://jira.jboss.org/jira/browse/JBRULES-1817
Project: JBoss Drools
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: drools-core
Affects Versions: 4.0.7
Environment: Sun JDK1.5.0_12 on Windows XP
Reporter: Stephanie Kroll
Assignee: Mark Proctor
Fix For: 5.0.0.M5
FactTemplateFieldExtractor does not implement equals(). This causes rules not to fire
when the number of literal string equality constraints equals or exceeds the alpha node
hashing threshold.
To reproduce for the trivial case, I created the following rule package:
package TestFactTemplate
template MyFact
String stringVal;
end
rule "Rule1"
when
MyFact (stringVal == "AA")
then
System.out.println("Rule1 fired");
end
rule "Rule2"
when
MyFact (stringVal == "AA")
then
System.out.println("Rule2 fired");
end
I implemented the Fact interface and returned "AA" from the two getFieldValue()
methods. I also set the alphaNodeHashingThreshold to 2. When executing the rules, only
Rule2 fires.
If FactTemplateFieldExtractor implements equals() like so:
public boolean equals(final Object object) {
if ( this == object ) {
return true;
}
if ( !(object instanceof FactTemplateFieldExtractor) ) {
return false;
}
final FactTemplateFieldExtractor other = (FactTemplateFieldExtractor) object;
return this.factTemplate.equals(other.factTemplate) &&
this.fieldIndex == other.fieldIndex;
}
then both rules fire.
The problem arises because without the equals() method for the field extractor, the
LiteralConstraints do not report as equal, and the network does not reuse the nodes in
BuildUtils.attachNode. When CompositeObjectSinkAdapter hashes the sinks because the
threshold is met, only the last one is preserved in the hashedSinkMap since the HashKeys
are the same.
--
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5:40 p.m.
New subject: [JBoss JIRA] Commented: (JBRULES-1817) FactTemplateFieldExtractor must implement equals() method
[
https://jira.jboss.org/jira/browse/JBRULES-1817?page=com.atlassian.jira.p...
]
Charles Daniels commented on JBRULES-1817:
------------------------------------------
I have created a patch for FactTemplateFieldExtractor in the 4.0.x branch (current version
in pom.xml is 4.0.8.SNAPSHOT) by backporting the hashCode() and equals(Object) methods
from the 5.0.0.24825.M5 branch. I don't have Jira permissions to attach the patch
file, so I have pasted it below. If someone could apply this patch so that it makes it
into the 4.0.8 release, it would be greatly appreciated. Thanks.
Index: FactTemplateFieldExtractor.java
===================================================================
--- FactTemplateFieldExtractor.java (revision 25004)
+++ FactTemplateFieldExtractor.java (working copy)
@@ -96,4 +96,31 @@
Object object) {
return ((Fact) object).getFieldValue( this.fieldIndex ) == null;
}
+
+ public int hashCode() {
+ final int prime = 31;
+ int result = 1;
+ result = prime * result + ((factTemplate == null) ? 0 :
factTemplate.hashCode());
+ result = prime * result + fieldIndex;
+ return result;
+ }
+
+ public boolean equals(Object obj) {
+ if ( this == obj ) return true;
+ if ( obj == null ) return false;
+ if ( getClass() != obj.getClass() ) return false;
+ FactTemplateFieldExtractor other = (FactTemplateFieldExtractor) obj;
+
+ if ( factTemplate == null ) {
+ if ( other.factTemplate != null ) return false;
+ } else if ( !factTemplate.equals( other.factTemplate ) ) {
+ return false;
+ }
+
+ if ( fieldIndex != other.fieldIndex ) {
+ return false;
+ }
+ return true;
+ }
+
}
FactTemplateFieldExtractor must implement equals() method
---------------------------------------------------------
Key: JBRULES-1817
URL: https://jira.jboss.org/jira/browse/JBRULES-1817
Project: JBoss Drools
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: drools-core
Affects Versions: 4.0.7
Environment: Sun JDK1.5.0_12 on Windows XP
Reporter: Stephanie Kroll
Assignee: Mark Proctor
Fix For: 5.0.0.M5
FactTemplateFieldExtractor does not implement equals(). This causes rules not to fire
when the number of literal string equality constraints equals or exceeds the alpha node
hashing threshold.
To reproduce for the trivial case, I created the following rule package:
package TestFactTemplate
template MyFact
String stringVal;
end
rule "Rule1"
when
MyFact (stringVal == "AA")
then
System.out.println("Rule1 fired");
end
rule "Rule2"
when
MyFact (stringVal == "AA")
then
System.out.println("Rule2 fired");
end
I implemented the Fact interface and returned "AA" from the two getFieldValue()
methods. I also set the alphaNodeHashingThreshold to 2. When executing the rules, only
Rule2 fires.
If FactTemplateFieldExtractor implements equals() like so:
public boolean equals(final Object object) {
if ( this == object ) {
return true;
}
if ( !(object instanceof FactTemplateFieldExtractor) ) {
return false;
}
final FactTemplateFieldExtractor other = (FactTemplateFieldExtractor) object;
return this.factTemplate.equals(other.factTemplate) &&
this.fieldIndex == other.fieldIndex;
}
then both rules fire.
The problem arises because without the equals() method for the field extractor, the
LiteralConstraints do not report as equal, and the network does not reuse the nodes in
BuildUtils.attachNode. When CompositeObjectSinkAdapter hashes the sinks because the
threshold is met, only the last one is preserved in the hashedSinkMap since the HashKeys
are the same.
--
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2:16 a.m.
New subject: [JBoss JIRA] Commented: (JBRULES-1817) FactTemplateFieldExtractor must implement equals() method
[
https://jira.jboss.org/jira/browse/JBRULES-1817?page=com.atlassian.jira.p...
]
Charles Daniels commented on JBRULES-1817:
------------------------------------------
In the previous posting, I failed to include the unit test changes in the patch. Here is a
patch that includes changes to the class and its unit test. This patch must be applied to
the root of the drools-core project:
Index: src/main/java/org/drools/facttemplates/FactTemplateFieldExtractor.java
===================================================================
--- src/main/java/org/drools/facttemplates/FactTemplateFieldExtractor.java (revision
25144)
+++ src/main/java/org/drools/facttemplates/FactTemplateFieldExtractor.java (working copy)
@@ -96,4 +96,30 @@
Object object) {
return ((Fact) object).getFieldValue( this.fieldIndex ) == null;
}
+
+ public int hashCode() {
+ final int prime = 31;
+ int result = 1;
+ result = prime * result + ((factTemplate == null) ? 0 :
factTemplate.hashCode());
+ result = prime * result + fieldIndex;
+ return result;
+ }
+
+ public boolean equals(Object obj) {
+ if ( this == obj ) return true;
+ if ( obj == null ) return false;
+ if ( getClass() != obj.getClass() ) return false;
+ FactTemplateFieldExtractor other = (FactTemplateFieldExtractor) obj;
+
+ if ( factTemplate == null ) {
+ if ( other.factTemplate != null ) return false;
+ } else if ( !factTemplate.equals( other.factTemplate ) ) {
+ return false;
+ }
+
+ if ( fieldIndex != other.fieldIndex ) {
+ return false;
+ }
+ return true;
+ }
}
Index: src/test/java/org/drools/facttemplates/FactTemplateFieldExtractorTest.java
===================================================================
--- src/test/java/org/drools/facttemplates/FactTemplateFieldExtractorTest.java (revision
25144)
+++ src/test/java/org/drools/facttemplates/FactTemplateFieldExtractorTest.java (working
copy)
@@ -8,25 +8,45 @@
import org.drools.spi.Extractor;
public class FactTemplateFieldExtractorTest extends TestCase {
+ Package pkg;
+ FieldTemplate cheeseName;
+ FieldTemplate cheesePrice;
+ FieldTemplate[] fields;
+ FactTemplate cheese;
+ Extractor extractName;
+ Extractor extractPrice;
+ Extractor extractPriceDup;
+
+ protected void setUp() throws Exception {
+ super.setUp();
+
+ pkg = new Package( "org.store" );
+ cheeseName = new FieldTemplateImpl( "name", 0, String.class );
+ cheesePrice = new FieldTemplateImpl( "price", 1, Integer.class );
+ fields = new FieldTemplate[]{cheeseName, cheesePrice};
+ cheese = new FactTemplateImpl( pkg, "Cheese", fields );
+ extractName = new FactTemplateFieldExtractor( cheese, 0 );
+ extractPrice = new FactTemplateFieldExtractor( cheese, 1 );
+ extractPriceDup = new FactTemplateFieldExtractor( cheese, 1 );
+ }
+
+ public void testEquals() {
+ assertEquals( extractPrice, extractPriceDup );
+ }
+
+ public void testNotEquals() {
+ assertFalse( extractName.equals( extractPrice ) );
+ }
+
+ public void testNotEqualsNull() {
+ assertFalse( extractName.equals( null ) );
+ }
+
+ public void testHashCode() {
+ assertEquals( extractPrice.hashCode(), extractPriceDup.hashCode() );
+ }
+
public void testExtractor() {
- final Package pkg = new Package( "org.store" );
-
- final FieldTemplate cheeseName = new FieldTemplateImpl( "name",
- 0,
- String.class );
- final FieldTemplate cheesePrice = new FieldTemplateImpl( "price",
- 1,
- Integer.class );
- final FieldTemplate[] fields = new FieldTemplate[]{cheeseName, cheesePrice};
- final FactTemplate cheese = new FactTemplateImpl( pkg,
- "Cheese",
- fields );
-
- final Extractor extractName = new FactTemplateFieldExtractor( cheese,
- 0 );
- final Extractor extractPrice = new FactTemplateFieldExtractor( cheese,
- 1 );
-
final Fact stilton = cheese.createFact( 10 );
stilton.setFieldValue( "name",
"stilton" );
@@ -69,22 +89,6 @@
}
public void testDeclaration() {
- final Package pkg = new Package( "org.store" );
-
- final FieldTemplate cheeseName = new FieldTemplateImpl( "name",
- 0,
- String.class );
- final FieldTemplate cheesePrice = new FieldTemplateImpl( "price",
- 1,
- Integer.class );
- final FieldTemplate[] fields = new FieldTemplate[]{cheeseName, cheesePrice};
- final FactTemplate cheese = new FactTemplateImpl( pkg,
- "Cheese",
- fields );
-
- final Extractor extractName = new FactTemplateFieldExtractor( cheese,
- 0 );
-
final Pattern pattern = new Pattern( 0,
new FactTemplateObjectType( cheese ) );
FactTemplateFieldExtractor must implement equals() method
---------------------------------------------------------
Key: JBRULES-1817
URL: https://jira.jboss.org/jira/browse/JBRULES-1817
Project: JBoss Drools
Issue Type: Bug
Security Level: Public(Everyone can see)
Components: drools-core
Affects Versions: 4.0.7
Environment: Sun JDK1.5.0_12 on Windows XP
Reporter: Stephanie Kroll
Assignee: Mark Proctor
Fix For: 5.0.0.M5
FactTemplateFieldExtractor does not implement equals(). This causes rules not to fire
when the number of literal string equality constraints equals or exceeds the alpha node
hashing threshold.
To reproduce for the trivial case, I created the following rule package:
package TestFactTemplate
template MyFact
String stringVal;
end
rule "Rule1"
when
MyFact (stringVal == "AA")
then
System.out.println("Rule1 fired");
end
rule "Rule2"
when
MyFact (stringVal == "AA")
then
System.out.println("Rule2 fired");
end
I implemented the Fact interface and returned "AA" from the two getFieldValue()
methods. I also set the alphaNodeHashingThreshold to 2. When executing the rules, only
Rule2 fires.
If FactTemplateFieldExtractor implements equals() like so:
public boolean equals(final Object object) {
if ( this == object ) {
return true;
}
if ( !(object instanceof FactTemplateFieldExtractor) ) {
return false;
}
final FactTemplateFieldExtractor other = (FactTemplateFieldExtractor) object;
return this.factTemplate.equals(other.factTemplate) &&
this.fieldIndex == other.fieldIndex;
}
then both rules fire.
The problem arises because without the equals() method for the field extractor, the
LiteralConstraints do not report as equal, and the network does not reuse the nodes in
BuildUtils.attachNode. When CompositeObjectSinkAdapter hashes the sinks because the
threshold is met, only the last one is preserved in the hashedSinkMap since the HashKeys
are the same.
--
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-
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-
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5704
days inactive
5813
days old
4 comments
3 participants
participants (3)
-
Charles Daniels (JIRA) -
Mark Proctor (JIRA)
-
Stephanie Kroll (JIRA)