Package org.apache.cayenne.exp.parser

Class ASTEnum

java.lang.Object

org.apache.cayenne.exp.Expression

org.apache.cayenne.exp.parser.SimpleNode

org.apache.cayenne.exp.parser.ASTScalar

org.apache.cayenne.exp.parser.ASTEnum

All Implemented Interfaces:

Serializable, Node, XMLSerializable

public class ASTEnum
extends ASTScalar

Scalar node that represents constant enumeration value. It resolves actual value at a late stage to be parsable in environment where final Enum class is not known, i.e. in Modeler.

Since:

4.1

See Also:

• Serialized Form

Field Summary

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

value

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
ASTEnum()
ASTEnum(Object value)

Method Summary

Modifier and Type	Method	Description
void	appendAsEJBQL(List<Object> parameterAccumulator, Appendable out, String rootId)	Stores a String representation of Expression as EJBQL using a provided PrintWriter.
protected Object	evaluateNode(Object o)	Evaluates itself with object, pushing result on the stack.
Object	getValue()
void	setEnumValue(String enumPath)
Expression	shallowCopy()	Creates a copy of this expression node, without copying children.

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

appendAsString, equals, getExpressionOperator, hashCode, setValue

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, getType, 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

ASTEnum

public ASTEnum()

ASTEnum

public ASTEnum(Object value)

Method Details

evaluateNode

protected Object evaluateNode(Object o)

Description copied from class: SimpleNode

Evaluates itself with object, pushing result on the stack.

Overrides:

evaluateNode in class ASTScalar

shallowCopy

public Expression shallowCopy()

Description copied from class: ASTScalar

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

Overrides:

shallowCopy in class ASTScalar

appendAsEJBQL

public void appendAsEJBQL(List<Object> parameterAccumulator,
 Appendable out,
 String rootId)
                   throws IOException

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. If the parameterAccumulator is supplied then as the EJBQL is output, it may load parameters into this list. In this case, the EJBQL output will contain reference to positional parameters. If no parameterAccumulator is supplied and a scalar type is encountered for which there is no EJBQL literal representation (such as dates) then this method will throw a runtime exception to indicate that it was not possible to generate a string-only representation of the Expression in EJBQL.

Overrides:

appendAsEJBQL in class ASTScalar

Throws:

IOException

getValue

public Object getValue()

Overrides:

getValue in class ASTScalar

setEnumValue

public void setEnumValue(String enumPath)
                  throws ParseException

Throws:

ParseException