Package org.apache.cayenne.exp.parser
Class ASTList
- 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.ASTList
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- All Implemented Interfaces:
Serializable,Node,XMLSerializable
public class ASTList extends SimpleNode
A leaf expression representing an immutable collection of values.- Since:
- 1.1
- See Also:
- Serialized Form
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Field Summary
Fields Modifier and Type Field Description protected Object[]values-
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, 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
Constructors Constructor Description ASTList()ASTList(Object[] objects)Initializes a list expression with an Object[].ASTList(Collection<?> objects)Initializes a list expression with a Java CollectionASTList(Iterator<?> objects)Initializes a list expression with a Java Iterator.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier 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.protected ObjectevaluateNode(Object o)Evaluates itself with object, pushing result on the stack.protected StringgetExpressionOperator(int index)ObjectgetOperand(int index)Returns a value of operand atindex.intgetOperandCount()Returns a count of operands of this expression.intgetType()Returns a type of expression.inthashCode()voidjjtClose()Called after all the child nodes have been added.voidsetOperand(int index, Object value)Sets a value of operand atindex.protected voidsetValues(Object value)Sets an internal collection of values.ExpressionshallowCopy()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, getPathAliases, jjtAddChild, 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, joinExp, joinExp, match, orExp, orExp, params, params, paramsArray, setType, toEJBQL, toEJBQL, toString, transform, transformExpression, traverse, traverse
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Field Detail
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values
protected Object[] values
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Constructor Detail
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ASTList
public ASTList()
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ASTList
public ASTList(Object[] objects)
Initializes a list expression with an Object[].
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ASTList
public ASTList(Collection<?> objects)
Initializes a list expression with a Java Collection
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ASTList
public ASTList(Iterator<?> objects)
Initializes a list expression with a Java Iterator.
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Method Detail
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shallowCopy
public Expression shallowCopy()
Creates a copy of this expression node, without copying children.- Specified by:
shallowCopyin classExpression
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evaluateNode
protected Object evaluateNode(Object o) throws Exception
Description copied from class:SimpleNodeEvaluates itself with object, pushing result on the stack.- Specified by:
evaluateNodein classSimpleNode- Throws:
Exception
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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
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getExpressionOperator
protected String getExpressionOperator(int index)
- Specified by:
getExpressionOperatorin classSimpleNode
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appendAsString
public void appendAsString(Appendable out) throws IOException
Description copied from class:ExpressionAppends own content as a String to the provided Appendable.- Overrides:
appendAsStringin 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: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
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getOperandCount
public int getOperandCount()
Description copied from class:ExpressionReturns a count of operands of this expression. In real life there are unary (count == 1), binary (count == 2) and ternary (count == 3) expressions.- Overrides:
getOperandCountin classSimpleNode
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getOperand
public Object getOperand(int index)
Description copied from class:ExpressionReturns a value of operand atindex. Operand indexing starts at 0.- Overrides:
getOperandin classSimpleNode
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setOperand
public void setOperand(int index, Object value)Description copied from class:ExpressionSets a value of operand atindex. Operand indexing starts at 0.- Overrides:
setOperandin classSimpleNode
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setValues
protected void setValues(Object value)
Sets an internal collection of values. Value argument can be an Object[], a Collection or an iterator.
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jjtClose
public void jjtClose()
Description copied from interface:NodeCalled after all the child nodes have been added.- Specified by:
jjtClosein interfaceNode- Overrides:
jjtClosein classSimpleNode
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hashCode
public int hashCode()
- Overrides:
hashCodein classExpression
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