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
A scalar value wrapper expression.
- Since:
- 1.1
- See Also:
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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, 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
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionvoid
appendAsEJBQL
(List<Object> parameterAccumulator, Appendable out, String rootId) Stores a String representation of Expression as EJBQL using a provided PrintWriter.void
appendAsString
(Appendable out) Appends own content as a String to the provided Appendable.boolean
protected Object
Evaluates itself with object, pushing result on the stack.protected String
getExpressionOperator
(int index) getValue()
int
hashCode()
void
Creates a copy of this expression node, without copying children.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
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Field Details
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value
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Constructor Details
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ASTScalar
public ASTScalar() -
ASTScalar
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Method Details
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evaluateNode
Description copied from class:SimpleNode
Evaluates itself with object, pushing result on the stack.- Specified by:
evaluateNode
in classSimpleNode
- Throws:
Exception
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shallowCopy
Creates a copy of this expression node, without copying children.- Specified by:
shallowCopy
in classExpression
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appendAsString
Description copied from class:Expression
Appends own content as a String to the provided Appendable.- Overrides:
appendAsString
in classSimpleNode
- Throws:
IOException
- Since:
- 4.0
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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 classSimpleNode
- Throws:
IOException
- Since:
- 4.0
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setValue
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getValue
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getExpressionOperator
- Specified by:
getExpressionOperator
in classSimpleNode
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equals
- Overrides:
equals
in classExpression
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hashCode
public int hashCode()- Overrides:
hashCode
in classExpression
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