Package org.eclipse.persistence.jpa.jpql.tools

Enum AbstractContentAssistVisitor.IdentificationVariableType

java.lang.Object

java.lang.Enum<AbstractContentAssistVisitor.IdentificationVariableType>

org.eclipse.persistence.jpa.jpql.tools.AbstractContentAssistVisitor.IdentificationVariableType

All Implemented Interfaces:

Serializable, Comparable<AbstractContentAssistVisitor.IdentificationVariableType>

Enclosing class:

AbstractContentAssistVisitor

protected static enum AbstractContentAssistVisitor.IdentificationVariableType
extends Enum<AbstractContentAssistVisitor.IdentificationVariableType>

The various ways of retrieving identification variables from the declaration expression.

Enum Constant Summary

Enum Constants

Enum Constant	Description
ALL	Retrieves all the identification variables declared in the declaration portion of the expression, which is either in the FROM clause of a SELECT query or DELETE query or in the UPDATE query.
COLLECTION	Only retrieves the identification variables that map a path expression defined in a JOIN expression or in a IN expression.
LEFT	Only retrieves the identification variables that have been declared to the left of the expression requested them, both range and collection type variables are collected.
LEFT_COLLECTION	Only retrieves the identification variables that map a path expression defined in a JOIN expression or in a IN expression but that have been declared to the left of the expression requested them.
NONE	Simply indicates the identification variables should not be collected.

Method Summary

Modifier and Type	Method	Description
protected abstract boolean	add(AbstractContentAssistVisitor contentAssist, Declaration declaration, Expression expression)	Adds the identification variables defined in the given Declaration.
static AbstractContentAssistVisitor.IdentificationVariableType	valueOf(String name)	Returns the enum constant of this type with the specified name.
static AbstractContentAssistVisitor.IdentificationVariableType[]	values()	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

ALL

public static final AbstractContentAssistVisitor.IdentificationVariableType ALL

Retrieves all the identification variables declared in the declaration portion of the expression, which is either in the FROM clause of a SELECT query or DELETE query or in the UPDATE query.

COLLECTION

public static final AbstractContentAssistVisitor.IdentificationVariableType COLLECTION

Only retrieves the identification variables that map a path expression defined in a JOIN expression or in a IN expression.

LEFT

public static final AbstractContentAssistVisitor.IdentificationVariableType LEFT

Only retrieves the identification variables that have been declared to the left of the expression requested them, both range and collection type variables are collected.

LEFT_COLLECTION

public static final AbstractContentAssistVisitor.IdentificationVariableType LEFT_COLLECTION

Only retrieves the identification variables that map a path expression defined in a JOIN expression or in a IN expression but that have been declared to the left of the expression requested them.

NONE

public static final AbstractContentAssistVisitor.IdentificationVariableType NONE

Simply indicates the identification variables should not be collected.

Method Detail

values

public static AbstractContentAssistVisitor.IdentificationVariableType[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (AbstractContentAssistVisitor.IdentificationVariableType c : AbstractContentAssistVisitor.IdentificationVariableType.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static AbstractContentAssistVisitor.IdentificationVariableType valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

add

protected abstract boolean add(AbstractContentAssistVisitor contentAssist,
                               Declaration declaration,
                               Expression expression)

Adds the identification variables defined in the given Declaration.

Parameters:

contentAssist - Backpointer to the content assist class

declaration - The Declaration in the order they are declared in the declaration clause

expression - The Expression being visited, which can help to determine when to stop collecting identification variables