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## org.apache.cayenne.exp.parser
Class ASTFalse

    java.lang.Object
      org.apache.cayenne.exp.Expression
          org.apache.cayenne.exp.parser.SimpleNode
              org.apache.cayenne.exp.parser.ConditionNode
                  org.apache.cayenne.exp.parser.ASTFalse

All Implemented Interfaces:
  Serializable, Node, XMLSerializable

    public class ASTFalse

extends ConditionNode

Boolean false expression element Notice that there is one ASTTrue and one ASTFalse instead of a ASTBoolean with a Boolean value. The main reason for doing this is that a common ASTBoolean will have operand count of 1 and that will default to a prepared statmenet like " where ? and (...)", but we only need " where true and (...)".

Since:
  3.0
See Also:
  `ASTTrue`, 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, 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
`ASTFalse()`

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.
`protected String` | `getExpressionOperator(int index)`
`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.ConditionNode
`jjtSetParent`

Methods inherited from class org.apache.cayenne.exp.parser.SimpleNode
`connectChildren, encodeAsEscapedString, encodeChildrenAsEJBQL, encodeScalarAsString, evaluate, evaluateChild, expName, flattenTree, getEJBQLExpressionOperator, getOperand, getOperandCount, getPathAliases, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, notExp, pruneNodeForPrunedChild, setOperand, 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

### ASTFalse

    public ASTFalse()

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`

### getExpressionOperator

    protected String getExpressionOperator(int index)

  Specified by:
    `getExpressionOperator` in class `SimpleNode`

### shallowCopy

    public Expression shallowCopy()

  Description copied from class: `Expression`
  Creates a copy of this expression node, without copying children.

  Specified by:
    `shallowCopy` in class `Expression`

### 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`

### 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

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