Package org.apache.cayenne.exp.parser
Class ASTPath
- java.lang.Object
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- org.apache.cayenne.exp.Expression
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- org.apache.cayenne.exp.parser.SimpleNode
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- org.apache.cayenne.exp.parser.ASTPath
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- All Implemented Interfaces:
Serializable
,Node
,XMLSerializable
- Direct Known Subclasses:
ASTDbPath
,ASTObjPath
public abstract class ASTPath extends SimpleNode
Generic path expression.- Since:
- 1.1
- See Also:
- Serialized Form
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Field Summary
Fields Modifier and Type Field Description protected String
path
protected Map<String,String>
pathAliases
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Fields inherited from class org.apache.cayenne.exp.parser.SimpleNode
children, id, parent
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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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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description protected CayenneMapEntry
evaluateEntityNode(Entity entity)
Helper method to evaluate path expression with Cayenne Entity.protected String
getExpressionOperator(int index)
Object
getOperand(int index)
Returns a value of operand atindex
.int
getOperandCount()
Returns a count of operands of this expression.String
getPath()
Map<String,String>
getPathAliases()
Always returns empty map.int
hashCode()
void
setOperand(int index, Object value)
Sets a value of operand atindex
.protected void
setPath(Object path)
void
setPathAliases(Map<String,String> pathAliases)
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Methods inherited from class org.apache.cayenne.exp.parser.SimpleNode
appendAsEJBQL, appendAsEJBQL, appendAsEscapedString, appendAsString, appendChildrenAsEJBQL, appendScalarAsString, connectChildren, encodeScalarAsEJBQL, evaluate, evaluateChild, evaluateNode, expName, flattenTree, getEJBQLExpressionOperator, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent, notExp, pruneNodeForPrunedChild, unwrapChild, wrapChild
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Methods inherited from class org.apache.cayenne.exp.Expression
andExp, andExp, deepCopy, encodeAsXML, equals, filter, filterObjects, first, getType, joinExp, joinExp, match, orExp, orExp, params, params, paramsArray, setType, shallowCopy, toEJBQL, toEJBQL, toString, transform, transformExpression, traverse, traverse
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Method Detail
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getOperandCount
public int getOperandCount()
Description copied from class:Expression
Returns a count of operands of this expression. In real life there are unary (count == 1), binary (count == 2) and ternary (count == 3) expressions.- Overrides:
getOperandCount
in classSimpleNode
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getOperand
public Object getOperand(int index)
Description copied from class:Expression
Returns a value of operand atindex
. Operand indexing starts at 0.- Overrides:
getOperand
in classSimpleNode
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setOperand
public void setOperand(int index, Object value)
Description copied from class:Expression
Sets a value of operand atindex
. Operand indexing starts at 0.- Overrides:
setOperand
in classSimpleNode
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setPath
protected void setPath(Object path)
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getPath
public String getPath()
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getPathAliases
public Map<String,String> getPathAliases()
Description copied from class:SimpleNode
Always returns empty map.- Overrides:
getPathAliases
in classSimpleNode
- Since:
- 3.0
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evaluateEntityNode
protected CayenneMapEntry evaluateEntityNode(Entity entity)
Helper method to evaluate path expression with Cayenne Entity.
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getExpressionOperator
protected String getExpressionOperator(int index)
- Specified by:
getExpressionOperator
in classSimpleNode
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hashCode
public int hashCode()
- Overrides:
hashCode
in classExpression
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