Package org.apache.cayenne.exp.parser
Class ASTCaseWhen
java.lang.Object
org.apache.cayenne.exp.Expression
org.apache.cayenne.exp.parser.SimpleNode
org.apache.cayenne.exp.parser.ASTCaseWhen
- All Implemented Interfaces:
Serializable,Node,XMLSerializable
"CASE-WHEN" expression root node.
- Since:
- 5.0
- See Also:
-
Field Summary
Fields inherited from class org.apache.cayenne.exp.parser.SimpleNode
children, id, parentFields inherited from class org.apache.cayenne.exp.Expression
ADD, ALL, AND, ANY, ASTERISK, BETWEEN, BITWISE_AND, BITWISE_LEFT_SHIFT, BITWISE_NOT, BITWISE_OR, BITWISE_RIGHT_SHIFT, BITWISE_XOR, CASE_WHEN, CUSTOM_OP, DB_PATH, DBID_PATH, DIVIDE, ELSE, 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, SCALAR, SUBQUERY, SUBTRACT, THEN, TRUE, type, WHEN -
Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionvoidappendAsEJBQL(List<Object> parameterAccumulator, Appendable out, String rootId) Stores a String representation of Expression as EJBQL using a provided PrintWriter.protected ObjectEvaluates itself with object, pushing result on the stack.protected StringgetExpressionOperator(int index) intgetType()Returns a type of expression.Creates a copy of this expression node, without copying children.Methods inherited from class org.apache.cayenne.exp.parser.SimpleNode
appendAsEJBQL, appendAsEscapedString, appendAsString, appendChildrenAsEJBQL, appendScalarAsString, connectChildren, encodeScalarAsEJBQL, evaluate, evaluateChild, exists, expName, flattenTree, getEJBQLExpressionOperator, getOperand, getOperandCount, getPathAliases, isValidParent, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent, notExists, notExp, pruneNodeForPrunedChild, setOperand, unwrapChild, wrapChildMethods inherited from class org.apache.cayenne.exp.Expression
andExp, andExp, deepCopy, encodeAsXML, equals, filter, filterObjects, first, hashCode, joinExp, joinExp, match, orExp, orExp, params, params, paramsArray, setType, toEJBQL, toEJBQL, toString, transform, transformExpression, traverse, traverse
-
Constructor Details
-
ASTCaseWhen
-
ASTCaseWhen
public ASTCaseWhen(int id)
-
-
Method Details
-
shallowCopy
Creates a copy of this expression node, without copying children.- Specified by:
shallowCopyin classExpression
-
getExpressionOperator
- Specified by:
getExpressionOperatorin classSimpleNode
-
evaluateNode
Description copied from class:SimpleNodeEvaluates itself with object, pushing result on the stack.- Specified by:
evaluateNodein classSimpleNode- Throws:
Exception
-
getType
public int getType()Description copied from class:ExpressionReturns a type of expression. Most common types are defined as public static fields of this interface.- Overrides:
getTypein classExpression
-
appendAsEJBQL
public void appendAsEJBQL(List<Object> parameterAccumulator, Appendable out, String rootId) throws IOException Description copied from class:ExpressionStores 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:
appendAsEJBQLin classSimpleNode- Throws:
IOException
-