[
https://issues.apache.org/jira/browse/IMPERIUS-23?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
David Wood updated IMPERIUS-23:
-------------------------------
Description:
The following simple policy when parsed causes a hang, which I believe is an
infinite loop (see below):
Import Class java.util.Properties:prop;
Strategy Execute_All_Applicable;
Policy
{
Condition
{
1 == 1 && prop.getProperty("foo","bar").equals("foo")
}
Decision
{
prop.getProperty("foo")
}
}:1;
I found a loop in PrimaryExpression.validate() that may not always execute an
Iterator.next() as follows:
while(identTupleIt.hasNext())
{
if(returnType.getType() == TypeConstants.referenceType)
{
String referenceTypeName =
returnType.getReferenceTypeName();
IdentPrimaryTuple ipt =
(IdentPrimaryTuple)identTupleIt.next();
if(i++ == 0) // first element in the list has
the same symbol table
{ // as the primary expression
ipt.setSymbolTable(_symTab);
}
returnType = ipt.validate(referenceTypeName);
} else {
identTupleIt.next(); // <--- Added by dawood
}
}
However, this then causes the following exception....
Mar 3, 2009 4:35:43 PM
org.apache.imperius.spl.parser.expressions.impl.LogicalAnd <init>
SEVERE: main validation error:
org.apache.imperius.spl.parser.expressions.impl.LogicalAnd has wrong data type
passed in.
Mar 3, 2009 4:35:43 PM org.apache.imperius.spl.parser.compiler.SPLTreeParser
expr
SEVERE: main TreeParser::Exception creating Expression at line 7 : validation
error: org.apache.imperius.spl.parser.expressions.impl.LogicalAnd has wrong
data type passed in.
validation error: org.apache.imperius.spl.parser.expressions.impl.LogicalAnd
has wrong data type passed in.
Number of Formal and passed parameters don't match for method getProperty
Mar 3, 2009 4:35:43 PM org.apache.imperius.spl.datastore.impl.PolicyParserImpl
parseFile
SEVERE: Error encountered while parsing tree
Exception in thread "main"
org.apache.imperius.spl.parser.exceptions.SPLException: Error encountered while
parsing tree
at
org.apache.imperius.spl.datastore.impl.PolicyParserImpl.parseFile(PolicyParserImpl.java:166)
at
org.apache.imperius.spl.datastore.impl.PolicyParserImpl.createInternalPolicyObject(PolicyParserImpl.java:96)
at
com.ibm.watson.pml.spl.policy.SPLJavaParser.parse(SPLJavaParser.java:47)
at com.ibm.watson.pml.PolicyParser.main(PolicyParser.java:66)
was:
The following simple policy when parsed causes a hang, which I believe is an
infinity look (see below):
Import Class java.util.Properties:prop;
Strategy Execute_All_Applicable;
Policy
{
Condition
{
1 == 1 && prop.getProperty("foo","bar").equals("foo")
}
Decision
{
prop.getProperty("foo")
}
}:1;
I found a look in PrimaryExpression.validate() that may not always execute an
Iterator.next() as follows:
while(identTupleIt.hasNext())
{
if(returnType.getType() == TypeConstants.referenceType)
{
String referenceTypeName =
returnType.getReferenceTypeName();
IdentPrimaryTuple ipt =
(IdentPrimaryTuple)identTupleIt.next();
if(i++ == 0) // first element in the list has
the same symbol table
{ // as the primary expression
ipt.setSymbolTable(_symTab);
}
returnType = ipt.validate(referenceTypeName);
} else {
identTupleIt.next(); // <--- Added by dawood
}
}
However, this then causes the following exception....
Mar 3, 2009 4:35:43 PM
org.apache.imperius.spl.parser.expressions.impl.LogicalAnd <init>
SEVERE: main validation error:
org.apache.imperius.spl.parser.expressions.impl.LogicalAnd has wrong data type
passed in.
Mar 3, 2009 4:35:43 PM org.apache.imperius.spl.parser.compiler.SPLTreeParser
expr
SEVERE: main TreeParser::Exception creating Expression at line 7 : validation
error: org.apache.imperius.spl.parser.expressions.impl.LogicalAnd has wrong
data type passed in.
validation error: org.apache.imperius.spl.parser.expressions.impl.LogicalAnd
has wrong data type passed in.
Number of Formal and passed parameters don't match for method getProperty
Mar 3, 2009 4:35:43 PM org.apache.imperius.spl.datastore.impl.PolicyParserImpl
parseFile
SEVERE: Error encountered while parsing tree
Exception in thread "main"
org.apache.imperius.spl.parser.exceptions.SPLException: Error encountered while
parsing tree
at
org.apache.imperius.spl.datastore.impl.PolicyParserImpl.parseFile(PolicyParserImpl.java:166)
at
org.apache.imperius.spl.datastore.impl.PolicyParserImpl.createInternalPolicyObject(PolicyParserImpl.java:96)
at
com.ibm.watson.pml.spl.policy.SPLJavaParser.parse(SPLJavaParser.java:47)
at com.ibm.watson.pml.PolicyParser.main(PolicyParser.java:66)
> Infinite loop, and then parse error.
> ------------------------------------
>
> Key: IMPERIUS-23
> URL: https://issues.apache.org/jira/browse/IMPERIUS-23
> Project: Imperius
> Issue Type: Bug
> Environment: Windows, Java 1.5.
> Reporter: David Wood
> Assignee: Bill Stoddard
>
> The following simple policy when parsed causes a hang, which I believe is an
> infinite loop (see below):
> Import Class java.util.Properties:prop;
> Strategy Execute_All_Applicable;
> Policy
> {
> Condition
> {
> 1 == 1 && prop.getProperty("foo","bar").equals("foo")
> }
> Decision
> {
> prop.getProperty("foo")
> }
> }:1;
> I found a loop in PrimaryExpression.validate() that may not always execute an
> Iterator.next() as follows:
> while(identTupleIt.hasNext())
> {
> if(returnType.getType() == TypeConstants.referenceType)
> {
> String referenceTypeName =
> returnType.getReferenceTypeName();
> IdentPrimaryTuple ipt =
> (IdentPrimaryTuple)identTupleIt.next();
> if(i++ == 0) // first element in the list has
> the same symbol table
> { // as the primary expression
> ipt.setSymbolTable(_symTab);
> }
> returnType = ipt.validate(referenceTypeName);
> } else {
> identTupleIt.next(); // <--- Added by dawood
> }
>
>
> }
> However, this then causes the following exception....
> Mar 3, 2009 4:35:43 PM
> org.apache.imperius.spl.parser.expressions.impl.LogicalAnd <init>
> SEVERE: main validation error:
> org.apache.imperius.spl.parser.expressions.impl.LogicalAnd has wrong data
> type passed in.
> Mar 3, 2009 4:35:43 PM org.apache.imperius.spl.parser.compiler.SPLTreeParser
> expr
> SEVERE: main TreeParser::Exception creating Expression at line 7 : validation
> error: org.apache.imperius.spl.parser.expressions.impl.LogicalAnd has wrong
> data type passed in.
> validation error: org.apache.imperius.spl.parser.expressions.impl.LogicalAnd
> has wrong data type passed in.
> Number of Formal and passed parameters don't match for method getProperty
> Mar 3, 2009 4:35:43 PM
> org.apache.imperius.spl.datastore.impl.PolicyParserImpl parseFile
> SEVERE: Error encountered while parsing tree
> Exception in thread "main"
> org.apache.imperius.spl.parser.exceptions.SPLException: Error encountered
> while parsing tree
> at
> org.apache.imperius.spl.datastore.impl.PolicyParserImpl.parseFile(PolicyParserImpl.java:166)
> at
> org.apache.imperius.spl.datastore.impl.PolicyParserImpl.createInternalPolicyObject(PolicyParserImpl.java:96)
> at
> com.ibm.watson.pml.spl.policy.SPLJavaParser.parse(SPLJavaParser.java:47)
> at com.ibm.watson.pml.PolicyParser.main(PolicyParser.java:66)
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