org.neo4j.kernel.api.operations

Interface EntityReadOperations

All Known Subinterfaces:

EntityOperations, ReadOperations, StatementContext

public interface EntityReadOperations

Method Summary

Methods

Modifier and Type	Method and Description
Iterator<Property>	nodeGetAllProperties(long nodeId)
Iterator<Long>	nodeGetLabels(long nodeId) Returns all labels set on node with id nodeId.
Property	nodeGetProperty(long nodeId, long propertyKeyId)
Iterator<Long>	nodeGetPropertyKeys(long nodeId) Return all property keys associated with a node.
boolean	nodeHasLabel(long nodeId, long labelId) Checks if a node is labeled with a certain label or not.
boolean	nodeHasProperty(long nodeId, long propertyKeyId) Returns true if node has the property given it's property key id for the node with the given node id
Iterator<Long>	nodesGetForLabel(long labelId)
Iterator<Long>	nodesGetFromIndexLookup(org.neo4j.kernel.impl.api.index.IndexDescriptor index, Object value) Returns an iterable with the matched nodes.
Iterator<Property>	relationshipGetAllProperties(long relationshipId)
Property	relationshipGetProperty(long relationshipId, long propertyKeyId)
Iterator<Long>	relationshipGetPropertyKeys(long relationshipId) Return all property keys associated with a relationship.
boolean	relationshipHasProperty(long relationshipId, long propertyKeyId)

Method Detail

nodesGetForLabel

Iterator<Long> nodesGetForLabel(long labelId)

Parameters:

labelId - the label id of the label that returned nodes are guaranteed to have

Returns:

ids of all nodes that have the given label

nodesGetFromIndexLookup

Iterator<Long> nodesGetFromIndexLookup(org.neo4j.kernel.impl.api.index.IndexDescriptor index,
                                     Object value)
                                       throws IndexNotFoundKernelException

Returns an iterable with the matched nodes.

Throws:

IndexNotFoundKernelException - if no such index found.

nodeHasLabel

boolean nodeHasLabel(long nodeId,
                   long labelId)
                     throws EntityNotFoundException

Checks if a node is labeled with a certain label or not. Returns true if the node is labeled with the label, otherwise false. Label ids are retrieved from KeyWriteOperations.labelGetOrCreateForName(String) or KeyReadOperations.labelGetForName(String).

Throws:

EntityNotFoundException

nodeGetLabels

Iterator<Long> nodeGetLabels(long nodeId)
                             throws EntityNotFoundException

Returns all labels set on node with id nodeId. If the node has no labels an empty Iterable will be returned.

Throws:

EntityNotFoundException

nodeGetProperty

Property nodeGetProperty(long nodeId,
                       long propertyKeyId)
                         throws PropertyKeyIdNotFoundException,
                                EntityNotFoundException

Throws:

PropertyKeyIdNotFoundException

EntityNotFoundException

relationshipGetProperty

Property relationshipGetProperty(long relationshipId,
                               long propertyKeyId)
                                 throws PropertyKeyIdNotFoundException,
                                        EntityNotFoundException

Throws:

PropertyKeyIdNotFoundException

EntityNotFoundException

nodeHasProperty

boolean nodeHasProperty(long nodeId,
                      long propertyKeyId)
                        throws PropertyKeyIdNotFoundException,
                               EntityNotFoundException

Returns true if node has the property given it's property key id for the node with the given node id

Throws:

PropertyKeyIdNotFoundException

EntityNotFoundException

relationshipHasProperty

boolean relationshipHasProperty(long relationshipId,
                              long propertyKeyId)
                                throws PropertyKeyIdNotFoundException,
                                       EntityNotFoundException

Throws:

PropertyKeyIdNotFoundException

EntityNotFoundException

nodeGetPropertyKeys

Iterator<Long> nodeGetPropertyKeys(long nodeId)

Return all property keys associated with a node.

nodeGetAllProperties

Iterator<Property> nodeGetAllProperties(long nodeId)

relationshipGetPropertyKeys

Iterator<Long> relationshipGetPropertyKeys(long relationshipId)

Return all property keys associated with a relationship.

relationshipGetAllProperties

Iterator<Property> relationshipGetAllProperties(long relationshipId)