org.apache.cayenne.exp.parser

Class ASTNegate

java.lang.Object

org.apache.cayenne.exp.Expression

org.apache.cayenne.exp.parser.SimpleNode

org.apache.cayenne.exp.parser.ASTNegate

All Implemented Interfaces:

Serializable, Node, XMLSerializable

public class ASTNegate
extends SimpleNode

"Negate" expression.

Since:

1.1

See Also:

Serialized Form

Field Summary

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, BITWISE_AND, BITWISE_NOT, BITWISE_OR, BITWISE_XOR, 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

Constructors

Constructor and Description
ASTNegate()
ASTNegate(Object node)

Method Summary

Methods

Modifier and Type	Method and Description
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.
protected String	getExpressionOperator(int index)
int	getOperandCount() Returns a count of operands of this expression.
int	getType() Returns a type of expression.
Expression	shallowCopy() Creates a copy of this expression node, without copying children.

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

connectChildren, encodeAsEscapedString, encodeChildrenAsEJBQL, encodeScalarAsString, evaluate, evaluateChild, expName, flattenTree, getEJBQLExpressionOperator, getOperand, getPathAliases, 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, first, 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

ASTNegate

public ASTNegate()

ASTNegate

public ASTNegate(Object node)

Method Detail

shallowCopy

public Expression shallowCopy()

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

Specified by:

shallowCopy in class Expression

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

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

getExpressionOperator

protected String getExpressionOperator(int index)

Specified by:

getExpressionOperator in class SimpleNode

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

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