Package org.apache.cayenne.exp.parser

Class ASTDbIdPath

java.lang.Object

org.apache.cayenne.exp.Expression

org.apache.cayenne.exp.parser.SimpleNode

org.apache.cayenne.exp.parser.ASTPath

org.apache.cayenne.exp.parser.ASTDbPath

org.apache.cayenne.exp.parser.ASTDbIdPath

All Implemented Interfaces:

Serializable, Node, XMLSerializable

public class ASTDbIdPath
extends ASTDbPath

Since:

4.2

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static final String	DBID_PREFIX

Fields inherited from class org.apache.cayenne.exp.parser.ASTDbPath

DB_PREFIX

Fields inherited from class org.apache.cayenne.exp.parser.ASTPath

path, pathAliases

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

Constructor Summary

Constructors

Constructor	Description
ASTDbIdPath()
ASTDbIdPath(Object value)

Method Summary

Modifier and Type	Method	Description
void	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.
protected CayenneMapEntry	evaluateEntityNode(Entity entity)	Helper method to evaluate path expression with Cayenne Entity.
protected Object	evaluateNode(Object o)	Evaluates itself with object, pushing result on the stack.
protected Object	evaluateNode(Object o, String localPath)
int	getType()	Returns a type of expression.
Expression	shallowCopy()	Creates a copy of this expression node, without copying children.
protected Map<?,?>	toMap(Object o)

Methods inherited from class org.apache.cayenne.exp.parser.ASTPath

getExpressionOperator, getOperand, getOperandCount, getPath, getPathAliases, hashCode, setOperand, setPath, setPathAliases

Methods inherited from class org.apache.cayenne.exp.parser.SimpleNode

appendAsEJBQL, appendAsEscapedString, appendChildrenAsEJBQL, appendScalarAsString, connectChildren, encodeScalarAsEJBQL, evaluate, evaluateChild, expName, flattenTree, getEJBQLExpressionOperator, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent, notExp, pruneNodeForPrunedChild, unwrapChild, wrapChild

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

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

DBID_PREFIX

public static final String DBID_PREFIX

See Also:

• Constant Field Values

Constructor Details

ASTDbIdPath

public ASTDbIdPath()

ASTDbIdPath

public ASTDbIdPath(Object value)

Method Details

shallowCopy

public Expression shallowCopy()

Creates a copy of this expression node, without copying children.

Overrides:

shallowCopy in class ASTDbPath

evaluateNode

protected Object evaluateNode(Object o,
 String localPath)

evaluateNode

protected Object evaluateNode(Object o)

Description copied from class: SimpleNode

Evaluates itself with object, pushing result on the stack.

Overrides:

evaluateNode in class ASTDbPath

evaluateEntityNode

protected CayenneMapEntry evaluateEntityNode(Entity entity)

Description copied from class: ASTDbPath

Helper method to evaluate path expression with Cayenne Entity.

Overrides:

evaluateEntityNode in class ASTDbPath

toMap

protected Map<?,?> toMap(Object o)

Overrides:

toMap in class ASTDbPath

getType

public int getType()

Description copied from class: Expression

Returns a type of expression. Most common types are defined as public static fields of this interface.

Overrides:

getType in class ASTDbPath

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 class ASTDbPath

Throws:

IOException

appendAsString

public void appendAsString(Appendable out)
                    throws IOException

Description copied from class: Expression

Appends own content as a String to the provided Appendable.

Overrides:

appendAsString in class ASTDbPath

Throws:

IOException