Re: ExistsInRelationshipQualifier

• Subject: Re: ExistsInRelationshipQualifier
• From: Pierre Bernard <email@hidden>
• Date: Wed, 5 Dec 2007 11:36:52 +0100
• Delivered-to: email@hidden
• Delivered-to: email@hidden

The latest version is at : http://code.google.com/p/houdah-webobjects-frameworks/

Pierre

On Dec 5, 2007, at 2:58 AM, Chuck Hill wrote:

That looks familiar. Pierre and I fixed a bug in this a while back. Are you using the current (i.e. up to date) ones from Houdah frameworks?

Chuck

On Dec 4, 2007, at 5:51 PM, David Holt wrote:

Hello All,

I am finally getting the chance to use the QualifierAdditions from Pierre Bernard (thanks Pierre!). I am using the following code that generates a NullPointerException. Can anyone see what I have done wrong?

I am trying to show all Artifacts that have not been specified as "favourites".

public EOFetchSpecification getPubliclyDisplayed() {

EOQualifier q1 = new EOKeyValueQualifier( "userName", EOQualifier.QualifierOperatorEqual, applicationUser.userName());
ExistsInRelationshipQualifier q2 = new ExistsInRelationshipQualifier("applicationUsers", q1);
// the inverse
EONotQualifier notq2 = new EONotQualifier(q2);

// EOQualifier q3 = new EOAndQualifier( new NSArray( new Object[] { q1, notq2 } ) );
EOFetchSpecification fs = new EOFetchSpecification( "Artifact", notq2, null );

return fs;
}

Stack trace:

java.lang.NullPointerException
File
Line#
Method
Package

EOSQLExpression.java
324
_aliasForRelationshipPath
com.webobjects.eoaccess
EOSQLExpression.java
259
_aliasForRelatedAttributeRelationshipPath
com.webobjects.eoaccess
ExistsInRelationshipQualifierSupport.java
99
sqlStringForSQLExpression
com.houdah.webobjects.eoaccess.qualifiers
EOQualifierSQLGeneration.java
151
_sqlStringForSQLExpression
com.webobjects.eoaccess
EOSQLExpression.java
1024
prepareSelectExpressionWithAttributes
com.webobjects.eoaccess
JDBCExpression.java
273
prepareSelectExpressionWithAttributes
com.webobjects.jdbcadaptor
EOSQLExpressionFactory.java
226
selectStatementForAttributes
com.webobjects.eoaccess
ERXSQLHelper.java
461
sqlExpressionForFetchSpecification
er.extensions
ERXSQLHelper.java
513
rowCountForFetchSpecification
er.extensions
ERXEOAccessUtilities.java
284
rowCountForFetchSpecification
er.extensions
ERXBatchingDisplayGroup.java
189
rowCount
er.extensions
ERXBatchingDisplayGroup.java
216
refetch
er.extensions
ERXBatchingDisplayGroup.java
276
fetch
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