org.apache.cayenne.exp.parser
Class ASTPath
java.lang.Object
org.apache.cayenne.exp.Expression
org.apache.cayenne.exp.parser.SimpleNode
org.apache.cayenne.exp.parser.ASTPath
- All Implemented Interfaces:
- Serializable, Node, XMLSerializable
- Direct Known Subclasses:
- ASTDbPath, ASTObjPath
public abstract class ASTPath
- extends SimpleNode
Generic path expression.
- Since:
- 1.1
- Author:
- Andrus Adamchik
- See Also:
- Serialized Form
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 |
Methods inherited from class org.apache.cayenne.exp.parser.SimpleNode |
encodeAsEscapedString, encodeAsString, encodeScalarAsString, evaluate, evaluateChild, evaluateNode, expName, flattenTree, 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, getType, joinExp, match, orExp, setType, shallowCopy, toString, transform, transformExpression, traverse, traverse |
path
protected String path
getOperandCount
public int getOperandCount()
- Description copied from class:
Expression
- Returns a count of operands of this expression. In real life there are unary (count ==
1), binary (count == 2) and ternary (count == 3) expressions.
- Overrides:
getOperandCount
in class SimpleNode
getOperand
public Object getOperand(int index)
- Description copied from class:
Expression
- Returns a value of operand at
index
. Operand indexing starts at 0.
- Overrides:
getOperand
in class SimpleNode
setOperand
public void setOperand(int index,
Object value)
- Description copied from class:
Expression
- Sets a value of operand at
index
. Operand indexing starts at 0.
- Overrides:
setOperand
in class SimpleNode
setPath
protected void setPath(Object path)
getPath
protected String getPath()
evaluateEntityNode
protected Object evaluateEntityNode(Entity entity)
- Helper method to evaluate path expression with Cayenne Entity.
getExpressionOperator
protected String getExpressionOperator(int index)
- Specified by:
getExpressionOperator
in class SimpleNode
Copyright © 2001-2007 Apache Cayenne. All Rights Reserved.