org.apache.cayenne.exp.parser
Class ASTScalar

java.lang.Object
  org.apache.cayenne.exp.Expression
      org.apache.cayenne.exp.parser.SimpleNode
          org.apache.cayenne.exp.parser.ASTScalar

All Implemented Interfaces:

java.io.Serializable, Node, XMLSerializable

Direct Known Subclasses:

ASTNamedParameter

public class ASTScalar
extends SimpleNode

A scalar value wrapper expression.

Since:

1.1

Author:

Andrei Adamchik

See Also:

Serialized Form

Field Summary

protected java.lang.Object

value

Fields inherited from class org.apache.cayenne.exp.parser.SimpleNode

children, id, parent

Fields inherited from class org.apache.cayenne.exp.Expression

ADD, ALL, AND, ANY, AVG, BETWEEN, COUNT, DB_PATH, DIVIDE, EQUAL_TO, EXISTS, GREATER_THAN, GREATER_THAN_EQUAL_TO, IN, LESS_THAN, LESS_THAN_EQUAL_TO, LIKE, LIKE_IGNORE_CASE, LIST, MAX, MIN, MULTIPLY, NEGATIVE, NOT, NOT_BETWEEN, NOT_EQUAL_TO, NOT_IN, NOT_LIKE, NOT_LIKE_IGNORE_CASE, OBJ_PATH, OR, POSITIVE, PRUNED_NODE, RAW_SQL, SOME, SUBQUERY, SUBTRACT, SUM, type

Constructor Summary

ASTScalar()

ASTScalar(java.lang.Object value)

Method Summary

void	encodeAsString(java.io.PrintWriter pw) Stores a String representation of Expression using a provided PrintWriter.
protected java.lang.Object	evaluateNode(java.lang.Object o) Evaluates itself with object, pushing result on the stack.
protected java.lang.String	getExpressionOperator(int index)
java.lang.Object	getValue()
void	setValue(java.lang.Object value)
Expression	shallowCopy() Creates a copy of this expression node, without copying children.

Methods inherited from class org.apache.cayenne.exp.parser.SimpleNode

encodeAsEscapedString, encodeScalarAsString, evaluate, evaluateChild, expName, flattenTree, getOperand, getOperandCount, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent, notExp, pruneNodeForPrunedChild, setOperand, 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, toString, transform, transformExpression, traverse, traverse

Methods inherited from class java.lang.Object

clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

value

protected java.lang.Object value

Constructor Detail

ASTScalar

public ASTScalar()

ASTScalar

public ASTScalar(java.lang.Object value)

Method Detail

evaluateNode

protected java.lang.Object evaluateNode(java.lang.Object o)
                                 throws java.lang.Exception

Description copied from class: SimpleNode

Evaluates itself with object, pushing result on the stack.

Specified by:

evaluateNode in class SimpleNode

Throws:

java.lang.Exception

shallowCopy

public Expression shallowCopy()

Creates a copy of this expression node, without copying children.

Specified by:

shallowCopy in class Expression

encodeAsString

public void encodeAsString(java.io.PrintWriter pw)

Description copied from class: Expression

Stores a String representation of Expression using a provided PrintWriter.

Overrides:

encodeAsString in class SimpleNode

setValue

public void setValue(java.lang.Object value)

getValue

public java.lang.Object getValue()

getExpressionOperator

protected java.lang.String getExpressionOperator(int index)

Specified by:

getExpressionOperator in class SimpleNode