Package org.apache.cayenne.exp.parser
Class ASTScalar
java.lang.Object
org.apache.cayenne.exp.Expression
org.apache.cayenne.exp.parser.SimpleNode
org.apache.cayenne.exp.parser.ASTScalar
- All Implemented Interfaces:
- Serializable,- Node,- XMLSerializable
- Direct Known Subclasses:
- ASTEnum,- ASTNamedParameter
public class ASTScalar extends SimpleNode
A scalar value wrapper expression.
- Since:
- 1.1
- See Also:
- Serialized Form
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Field SummaryFields inherited from class org.apache.cayenne.exp.parser.SimpleNodechildren, id, parentFields inherited from class org.apache.cayenne.exp.ExpressionADD, AND, ASTERISK, BETWEEN, BITWISE_AND, BITWISE_LEFT_SHIFT, BITWISE_NOT, BITWISE_OR, BITWISE_RIGHT_SHIFT, BITWISE_XOR, DB_PATH, DIVIDE, EQUAL_TO, 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_IN, NOT_LIKE, NOT_LIKE_IGNORE_CASE, OBJ_PATH, OR, PRUNED_NODE, SUBTRACT, TRUE, type
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Constructor Summary
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Method SummaryModifier and Type Method Description voidappendAsEJBQL(List<Object> parameterAccumulator, Appendable out, String rootId)Stores a String representation of Expression as EJBQL using a provided PrintWriter.voidappendAsString(Appendable out)Appends own content as a String to the provided Appendable.booleanequals(Object o)protected ObjectevaluateNode(Object o)Evaluates itself with object, pushing result on the stack.protected StringgetExpressionOperator(int index)ObjectgetValue()inthashCode()voidsetValue(Object value)ExpressionshallowCopy()Creates a copy of this expression node, without copying children.Methods inherited from class org.apache.cayenne.exp.parser.SimpleNodeappendAsEJBQL, appendAsEscapedString, appendChildrenAsEJBQL, appendScalarAsString, connectChildren, encodeScalarAsEJBQL, evaluate, evaluateChild, expName, flattenTree, getEJBQLExpressionOperator, getOperand, getOperandCount, getPathAliases, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent, notExp, pruneNodeForPrunedChild, setOperand, unwrapChild, wrapChildMethods inherited from class org.apache.cayenne.exp.ExpressionandExp, andExp, deepCopy, encodeAsXML, filter, filterObjects, first, getType, joinExp, joinExp, match, orExp, orExp, params, params, paramsArray, setType, toEJBQL, toEJBQL, toString, transform, transformExpression, traverse, traverse
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Field Details- 
value
 
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Constructor Details- 
ASTScalarpublic ASTScalar()
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ASTScalar
 
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Method Details- 
evaluateNodeDescription copied from class:SimpleNodeEvaluates itself with object, pushing result on the stack.- Specified by:
- evaluateNodein class- SimpleNode
- Throws:
- Exception
 
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shallowCopyCreates a copy of this expression node, without copying children.- Specified by:
- shallowCopyin class- Expression
 
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appendAsStringDescription copied from class:ExpressionAppends own content as a String to the provided Appendable.- Overrides:
- appendAsStringin class- SimpleNode
- Throws:
- IOException
- Since:
- 4.0
 
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appendAsEJBQLpublic void appendAsEJBQL(List<Object> parameterAccumulator, Appendable out, String rootId) throws IOExceptionDescription 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 class- SimpleNode
- Throws:
- IOException
- Since:
- 4.0
 
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setValue
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getValue
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getExpressionOperator- Specified by:
- getExpressionOperatorin class- SimpleNode
 
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equals- Overrides:
- equalsin class- Expression
 
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hashCodepublic int hashCode()- Overrides:
- hashCodein class- Expression
 
 
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