Package org.apache.cayenne.exp.parser

Class ASTSubstring

java.lang.Object

org.apache.cayenne.exp.Expression

org.apache.cayenne.exp.parser.SimpleNode

org.apache.cayenne.exp.parser.EvaluatedNode

org.apache.cayenne.exp.parser.ASTFunctionCall

org.apache.cayenne.exp.parser.ASTSubstring

All Implemented Interfaces:

Serializable, Node, XMLSerializable

public class ASTSubstring
extends ASTFunctionCall

Since:

4.0

See Also:

• Serialized Form

Field Summary

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

functionName

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

children, id, parent

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

ADD, AND, ASTERISK, BETWEEN, BITWISE_AND, BITWISE_LEFT_SHIFT, BITWISE_NOT, BITWISE_OR, BITWISE_RIGHT_SHIFT, BITWISE_XOR, CUSTOM_OP, DB_PATH, DBID_PATH, DIVIDE, ENCLOSING_OBJECT, EQUAL_TO, EXISTS, FALSE, FULL_OBJECT, FUNCTION_CALL, 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_EXISTS, NOT_IN, NOT_LIKE, NOT_LIKE_IGNORE_CASE, OBJ_PATH, OR, PRUNED_NODE, SUBQUERY, SUBTRACT, TRUE, type

Constructor Summary

Constructors

Constructor	Description
ASTSubstring(Expression path, Expression length, Expression offset)

Method Summary

Modifier and Type	Method	Description
protected Object	evaluateSubNode(Object o, Object[] evaluatedChildren)
protected int	getRequiredChildrenCount()
Expression	shallowCopy()	Creates a copy of this expression node, without copying children.

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

appendAsEJBQL, appendAsString, appendFunctionNameAsString, equals, getExpressionOperator, getFunctionName, getType, hashCode, nameToCamelCase, needParenthesis, setFunctionName

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

evaluateNode

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

appendAsEJBQL, appendAsEscapedString, appendChildrenAsEJBQL, appendScalarAsString, connectChildren, encodeScalarAsEJBQL, evaluate, evaluateChild, expName, flattenTree, getEJBQLExpressionOperator, getOperand, getOperandCount, getPathAliases, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent, notExp, pruneNodeForPrunedChild, setOperand, unwrapChild, wrapChild

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

andExp, andExp, deepCopy, encodeAsXML, filter, filterObjects, first, joinExp, joinExp, match, orExp, orExp, params, params, paramsArray, setType, toEJBQL, toEJBQL, toString, transform, transformExpression, traverse, traverse

Methods inherited from class java.lang.Object

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

Constructor Details

ASTSubstring

public ASTSubstring(Expression path,
 Expression length,
 Expression offset)

Method Details

evaluateSubNode

protected Object evaluateSubNode(Object o,
 Object[] evaluatedChildren)
                          throws Exception

Specified by:

evaluateSubNode in class EvaluatedNode

Throws:

Exception

getRequiredChildrenCount

protected int getRequiredChildrenCount()

Specified by:

getRequiredChildrenCount in class EvaluatedNode

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