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public interface Path
A path represents a traversal into fields of a candidate object. Equivalent paths should compare equal.
| Method Summary | |
|---|---|
|  void | get(FieldMetaData field,
    boolean nullTraversal)Traverse into the given field of the current object, and update the current object to that field value. | 
|  void | get(FieldMetaData fmd,
    XMLMetaData meta)Traverse into the given field that maps to xml column, and update the current object to that field value. | 
|  void | get(XMLMetaData meta,
    String name)Traverse into the gevin xpath name of the current object, and update the current object to that xpath field. | 
|  String | getCorrelationVar() | 
|  String | getSchemaAlias() | 
|  XMLMetaData | getXmlMapping()Return the current XPath's xmlmapping metadata. | 
|  FieldMetaData | last()Return the last field in the path, or null if the path does not not contain a final field. | 
|  void | setSchemaAlias(String schemaAlias)Set the schema alias (the identification variable) this path is begin with. | 
|  void | setSubqueryContext(Context context,
                   String correlationVar) | 
| Methods inherited from interface org.apache.openjpa.kernel.exps.Value | 
|---|
| acceptVisit, getAlias, getMetaData, getName, getPath, getSelectAs, getType, isAggregate, isVariable, isXPath, setAlias, setImplicitType, setMetaData | 
| Method Detail | 
|---|
void get(FieldMetaData field,
         boolean nullTraversal)
nullTraversal - if true, allow traversal through a null fieldFieldMetaData last()
void get(FieldMetaData fmd,
         XMLMetaData meta)
fmd - field maps to xml columnmeta - associated xml mapping
void get(XMLMetaData meta,
         String name)
meta - name - XMLMetaData getXmlMapping()
void setSchemaAlias(String schemaAlias)
schemaAlias - String getSchemaAlias()
void setSubqueryContext(Context context,
                        String correlationVar)
String getCorrelationVar()
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