| Interface | Description | 
|---|---|
| IERXChainableQualifier | IERXQualifier is the definition of methods required for chainable
 EOQualifier. | 
| Class | Description | 
|---|---|
| ERXAndQualifier | ERXAndQualifier is a chainable extension of EOAndQualifier. | 
| ERXChainedQualifierUtils | ERXQ | 
| ERXFalseQualifier | An EOQualifier that always evaluates to a  falseresult. | 
| ERXFalseQualifierSupport | SQL generation support for  ERXFalseQualifier. | 
| ERXKeyComparisonQualifier | ERXKeyComparisonQualifier is a chainable extension of
 EOKeyComparisonQualifier. | 
| ERXKeyValueQualifier | ERXKeyValueQualifier is a chainable extension of EOKeyValueQualifier. | 
| ERXNotQualifier | ERXNotQualifier is a chainable extension of EONotQualifier. | 
| ERXOrQualifier | ERXOrQualifier is a chainable extension of EOOrQualifier. | 
| ERXPrefixQualifierTraversal | Takes a qualifier, traverses every subqualifier, and prepends every keypath
 with an extra keypath. | 
| ERXQualifierTraversal | Traverse a network of qualifiers until a traversal method returns false. | 
| ERXQuicksilverQualifier | ERXQuicksilverQualifier is a KeyValueQualifier that compares values with
 ERXStringUtilities.quicksilverContains. | 
| ERXTrueQualifier | An EOQualifier that always evaluates to a  trueresult. | 
| ERXTrueQualifierSupport | SQL generation support for  ERXTrueQualifier. | 
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