org.apache.cayenne.exp.parser
Class ASTDbPath

java.lang.Object
  extended by org.apache.cayenne.exp.Expression
      extended by org.apache.cayenne.exp.parser.SimpleNode
          extended by org.apache.cayenne.exp.parser.ASTPath
              extended by org.apache.cayenne.exp.parser.ASTDbPath
All Implemented Interfaces:
Serializable, Node, XMLSerializable

public class ASTDbPath
extends ASTPath

Path expression traversing DB relationships and attributes.

Since:
1.1
See Also:
Serialized Form

Field Summary
 
Fields inherited from class org.apache.cayenne.exp.parser.ASTPath
path, pathAliases
 
Fields inherited from class org.apache.cayenne.exp.parser.SimpleNode
children, id, parent
 
Fields inherited from class org.apache.cayenne.exp.Expression
ADD, AND, BETWEEN, DB_PATH, DIVIDE, EQUAL_TO, FALSE, GREATER_THAN, GREATER_THAN_EQUAL_TO, IN, LESS_THAN, LESS_THAN_EQUAL_TO, LIKE, LIKE_IGNORE_CASE, LIST, MULTIPLY, NEGATIVE, NOT, NOT_BETWEEN, NOT_EQUAL_TO, NOT_IN, NOT_LIKE, NOT_LIKE_IGNORE_CASE, OBJ_PATH, OR, PRUNED_NODE, SUBTRACT, TRUE, type
 
Constructor Summary
ASTDbPath()
           
ASTDbPath(Object value)
           
 
Method Summary
 void encodeAsEJBQL(PrintWriter pw, String rootId)
          Stores a String representation of Expression as EJBQL using a provided PrintWriter.
 void encodeAsString(PrintWriter pw)
          Stores a String representation of Expression using a provided PrintWriter.
protected  Object evaluateNode(Object o)
          Evaluates itself with object, pushing result on the stack.
 int getType()
          Returns a type of expression.
 Expression shallowCopy()
          Creates a copy of this expression node, without copying children.
protected  Map<?,?> toMap(Object o)
           
 
Methods inherited from class org.apache.cayenne.exp.parser.ASTPath
evaluateEntityNode, getExpressionOperator, getOperand, getOperandCount, getPath, getPathAliases, setOperand, setPath, setPathAliases
 
Methods inherited from class org.apache.cayenne.exp.parser.SimpleNode
connectChildren, encodeAsEscapedString, encodeChildrenAsEJBQL, encodeScalarAsString, evaluate, evaluateChild, expName, flattenTree, getEJBQLExpressionOperator, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent, notExp, pruneNodeForPrunedChild, unwrapChild, wrapChild
 
Methods inherited from class org.apache.cayenne.exp.Expression
andExp, deepCopy, encodeAsXML, equals, expWithParameters, expWithParameters, filter, filterObjects, fromString, joinExp, match, orExp, setType, toEJBQL, toString, transform, transformExpression, traverse, traverse
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

ASTDbPath

public ASTDbPath()

ASTDbPath

public ASTDbPath(Object value)
Method Detail

evaluateNode

protected Object evaluateNode(Object o)
                       throws Exception
Description copied from class: SimpleNode
Evaluates itself with object, pushing result on the stack.

Specified by:
evaluateNode in class SimpleNode
Throws:
Exception

toMap

protected Map<?,?> toMap(Object o)

shallowCopy

public Expression shallowCopy()
Creates a copy of this expression node, without copying children.

Specified by:
shallowCopy in class Expression

encodeAsString

public void encodeAsString(PrintWriter pw)
Description copied from class: Expression
Stores a String representation of Expression using a provided PrintWriter.

Overrides:
encodeAsString in class SimpleNode

encodeAsEJBQL

public void encodeAsEJBQL(PrintWriter pw,
                          String rootId)
Description copied from class: Expression
Stores a String representation of Expression as EJBQL using a provided PrintWriter. DB path expressions produce non-standard EJBQL path expressions.

Overrides:
encodeAsEJBQL in class SimpleNode
Since:
3.0

getType

public int getType()
Description copied from class: Expression
Returns a type of expression. Most common types are defined as public static fields of this interface.

Overrides:
getType in class Expression


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