/**
* Get Data for identification variable.
*
* @param idVarNode A node that corresponds to
* @return
*/
private IdentificationVariableData getIdentificationVarData(EJBQLAST idVarNode) {
JavaType entityJavaType = (JavaType) idVarNode.getTypeInfo();
assert entityJavaType != null
: "This method is to be called only for" // NOI18N
+ "node that corresponds to identification variable."; // NOI18N
String navigationId = idVarNode.getNavigationId();
return selectPlan.getIdentificationVariableData(entityJavaType, navigationId);
}
/**
* Process user parameters. User parameters of type PersistenceCapable are treated specially.
*
* @param node The node represting pararmeter in query tree
* @return If the parameter corresponds to a PersistenceCapable type, the text of the node as it
* is. Please note that by convention, all methods processing where clause rerturn a
* StringBuffer. This methos deviates from the convention for parameter of PersistenceCapable
* type. However, for this type of parameter, the return value of this method will always go
* into method leaveRelationalExpresionEntityEqual() which will always return a Stringbuffer.
* Else a StringBuffer representing parameter marker.
*/
@Override
public Object leaveParameter(EJBQLAST node) {
// TODO: As per discussion on conf call on 05/05, it should be possible to
// extract enough information while in this method to get hold of RunTimeMappingField
// (That is atleast String entityType and String fieldName).
// This information is required for embedded objects and object cocomparison
// for objects with composite pk to construct correct sql text and parameters
Object retVal;
JavaType javaType = (JavaType) node.getTypeInfo();
if (javaType.isPersistenceCapable()) {
// If this corresponds to an entity mapped to composite pk, this
// parameter will translate into multiple parameter markers in the
// generated sql. Let leaveRelationalExpresionEntityEqual handle this
// case
retVal = selectPlan.getParameterData(javaType, node.getText());
} else {
// The parameter will have exactly one parameter marker in the
// generated sql text. Add the parameter to plan.
retVal = selectPlan.addUserParameter(node.getText());
}
return retVal;
}
/**
* For query Select .. from Department d...., This method is called for expression Department.
*
* @param node The node in query tree that corresponds to the experssion.
* @return fully qualified name of the javaType of this node.
*/
@Override
public String leaveAbstractSchemaName(EJBQLAST node) {
JavaType javaType = (JavaType) node.getTypeInfo();
return javaType.getName();
}