com.edorasware.api.query.internal

Class HierarchyOperandImpl

java.lang.Object

com.edorasware.api.query.internal.HierarchyOperandImpl

All Implemented Interfaces:

HierarchyOperand

public class HierarchyOperandImpl
extends Object
implements HierarchyOperand

Default implementation of the HierarchyOperand interface.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	HierarchyOperandImpl.PathIdsReferenceValue

Constructor Summary

Constructors

Constructor and Description
HierarchyOperandImpl(QueryParameter pathQueryParameter, QueryParameter parentQueryParameter, QueryParameter idQueryParameter) Creates a new operand instance.

Method Summary

Modifier and Type	Method and Description
Predicate	childOf(String expectedId) Builds a predicate matching direct children of object with the given ID.
Predicate	childrenOf(Collection<String> expectedIds) Builds a predicate matching direct children of the objects with the given IDs.
Predicate	descendantOf(String expectedId) Builds a predicate matching all descendants of the object with the given ID.
Predicate	descendantOfOrEq(String expectedId) Builds a predicate matching all descendants of the object with the given ID, including the parent object.
Predicate	isRoot() Builds a predicate matching objects at the root of the hierarchy (i.e. with no parent).
Ordering	orderAsc() Builds an ordering criterion which sorts by the operand value in ascending order.
Ordering	orderDesc() Builds an ordering criterion which sorts by the operand value in descending order.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

HierarchyOperandImpl

public HierarchyOperandImpl(QueryParameter pathQueryParameter,
                            QueryParameter parentQueryParameter,
                            QueryParameter idQueryParameter)

Creates a new operand instance.

Parameters:

pathQueryParameter - the left operand for all path predicates to be built

parentQueryParameter - the left operand for all parent predicates to be built

idQueryParameter - the left operand of the predicate to be built for the inner select statement that determines the path of a given root object

Method Detail

descendantOf

public Predicate descendantOf(String expectedId)

Description copied from interface: HierarchyOperand

Builds a predicate matching all descendants of the object with the given ID.

Specified by:

descendantOf in interface HierarchyOperand

Parameters:

expectedId - the id of the (direct or indirect) parent object

Returns:

the new predicate instance

descendantOfOrEq

public Predicate descendantOfOrEq(String expectedId)

Description copied from interface: HierarchyOperand

Builds a predicate matching all descendants of the object with the given ID, including the parent object.

Specified by:

descendantOfOrEq in interface HierarchyOperand

Parameters:

expectedId - the id of the (direct or indirect) parent object

Returns:

the new predicate instance

childOf

public Predicate childOf(String expectedId)

Description copied from interface: HierarchyOperand

Builds a predicate matching direct children of object with the given ID.

Specified by:

childOf in interface HierarchyOperand

Parameters:

expectedId - the id of the direct parent object

Returns:

the new predicate instance

childrenOf

public Predicate childrenOf(Collection<String> expectedIds)

Description copied from interface: HierarchyOperand

Builds a predicate matching direct children of the objects with the given IDs.

Specified by:

childrenOf in interface HierarchyOperand

Parameters:

expectedIds - the ids of the direct parent objects

Returns:

the new predicate instance

isRoot

public Predicate isRoot()

Description copied from interface: HierarchyOperand

Builds a predicate matching objects at the root of the hierarchy (i.e. with no parent).

Specified by:

isRoot in interface HierarchyOperand

Returns:

the new predicate instance

orderAsc

public final Ordering orderAsc()

Description copied from interface: HierarchyOperand

Builds an ordering criterion which sorts by the operand value in ascending order.

Specified by:

orderAsc in interface HierarchyOperand

Returns:

the new ordering instance

orderDesc

public final Ordering orderDesc()

Description copied from interface: HierarchyOperand

Builds an ordering criterion which sorts by the operand value in descending order.

Specified by:

orderDesc in interface HierarchyOperand

Returns:

the new ordering instance