Package de.julielab.neo4j.plugins.auxiliaries

Class PropertyUtilities

java.lang.Object

de.julielab.neo4j.plugins.auxiliaries.PropertyUtilities

Direct Known Subclasses:

NodeUtilities

public class PropertyUtilities
extends Object

Constructor Summary

Constructors

Constructor	Description
PropertyUtilities()

Method Summary

Modifier and Type	Method	Description
static <T> int	addToArrayProperty(org.neo4j.graphdb.Entity node, String key, T value)	Adds value to the property with name key but does not allow duplicates or null values.
static <T> int	addToArrayProperty(org.neo4j.graphdb.Entity node, String key, T value, boolean allowDuplicates)
static <T> int	addToArrayProperty(org.neo4j.graphdb.Entity node, String key, T value, boolean allowDuplicates, boolean allowNullValues)
static void	copyObjectToEntity(Object object, org.neo4j.graphdb.Entity node)
static void	copyObjectToEntity(Object object, org.neo4j.graphdb.Entity node, String... exclusions)
static void	copyObjectToEntity(Object object, org.neo4j.graphdb.Entity node, Set<String> exclusions)
static int	findFirstValueInArrayProperty(org.neo4j.graphdb.Node term, String key, String value)
static String	getNodePropertiesAsString(org.neo4j.graphdb.Entity node)
static Object	getNonNullNodeProperty(org.neo4j.graphdb.Entity node, String key)	Returns the property stored at key key in the specified property container or null.
static boolean	hasContradictingPropertyValue(org.neo4j.graphdb.Entity term, String key, Object valueToCompare)	Determines whether the property container has a value for the property with key key and this value does not equal valueToCompare.
static boolean	hasSamePropertyValue(org.neo4j.graphdb.Entity term, String key, Object valueToCompare)	Checks whether the property container has the exact valueToCompare as value for the property identified by key.
static <T> void	mergeArrayProperty(org.neo4j.graphdb.Entity node, String key, Supplier<T[]> arraySupplier)
static <T> void	mergeArrayProperty(org.neo4j.graphdb.Entity node, String key, T[] array)	Gets the current property values at key for the node node and adds them all into a single Set together with the contents of array to avoid duplicates.
static void	mergeEntityIntoEntity(org.neo4j.graphdb.Node from, org.neo4j.graphdb.Node to, String... exclusions)
static void	mergeObjectIntoEntity(Object object, org.neo4j.graphdb.Entity node, String... exclusions)
static void	mergeObjectIntoEntity(Object object, org.neo4j.graphdb.Entity node, Set<String> exclusions)
static boolean	mergeProperties(org.neo4j.graphdb.Entity propContainer, Object... properties)
static void	setNonNullNodeProperty(org.neo4j.graphdb.Entity node, String key, Object value)	Sets the property at property key key of node to value, if value is not null and the property on the node not already set.
static void	setNonNullNodeProperty(org.neo4j.graphdb.Entity node, String key, Object value, Object defaultValue)	Sets the property at property key key of node to value, if value is not null and the property on the node not already set.
static void	setNonNullNodeProperty(org.neo4j.graphdb.Entity node, String key, Supplier<Object> value)

Methods inherited from class java.lang.Object

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

Constructor Detail

PropertyUtilities

public PropertyUtilities()

Method Detail

copyObjectToEntity

public static void copyObjectToEntity(Object object,
                                      org.neo4j.graphdb.Entity node)

copyObjectToEntity

public static void copyObjectToEntity(Object object,
                                      org.neo4j.graphdb.Entity node,
                                      String... exclusions)

copyObjectToEntity

public static void copyObjectToEntity(Object object,
                                      org.neo4j.graphdb.Entity node,
                                      Set<String> exclusions)

mergeObjectIntoEntity

public static void mergeObjectIntoEntity(Object object,
                                         org.neo4j.graphdb.Entity node,
                                         String... exclusions)

mergeObjectIntoEntity

public static void mergeObjectIntoEntity(Object object,
                                         org.neo4j.graphdb.Entity node,
                                         Set<String> exclusions)

mergeEntityIntoEntity

public static void mergeEntityIntoEntity(org.neo4j.graphdb.Node from,
                                         org.neo4j.graphdb.Node to,
                                         String... exclusions)

mergeArrayProperty

public static <T> void mergeArrayProperty(org.neo4j.graphdb.Entity node,
                                          String key,
                                          Supplier<T[]> arraySupplier)

mergeArrayProperty

public static <T> void mergeArrayProperty(org.neo4j.graphdb.Entity node,
                                          String key,
                                          T[] array)

Gets the current property values at key for the node node and adds them all into a single Set together with the contents of array to avoid duplicates. Then, the Set is converted back into an array which is then set as the new node property. A LinkedHashSet is used to maintain the original order. The original values are added first. Thus, new values are appended to the end of the new array.

Parameters:

node -

key -

array -

addToArrayProperty

public static <T> int addToArrayProperty(org.neo4j.graphdb.Entity node,
                                         String key,
                                         T value)

Adds value to the property with name key but does not allow duplicates or null values.

Parameters:

node -

key -

value -

Returns:

addToArrayProperty

public static <T> int addToArrayProperty(org.neo4j.graphdb.Entity node,
                                         String key,
                                         T value,
                                         boolean allowDuplicates)

addToArrayProperty

public static <T> int addToArrayProperty(org.neo4j.graphdb.Entity node,
                                         String key,
                                         T value,
                                         boolean allowDuplicates,
                                         boolean allowNullValues)

setNonNullNodeProperty

public static void setNonNullNodeProperty(org.neo4j.graphdb.Entity node,
                                          String key,
                                          Supplier<Object> value)

setNonNullNodeProperty

public static void setNonNullNodeProperty(org.neo4j.graphdb.Entity node,
                                          String key,
                                          Object value)

Sets the property at property key key of node to value, if value is not null and the property on the node not already set.

Parameters:

node -

key -

value -

setNonNullNodeProperty

public static void setNonNullNodeProperty(org.neo4j.graphdb.Entity node,
                                          String key,
                                          Object value,
                                          Object defaultValue)

Sets the property at property key key of node to value, if value is not null and the property on the node not already set. If value is null, the property is set to defaultValue.

Parameters:

node -

key -

value -

getNonNullNodeProperty

public static Object getNonNullNodeProperty(org.neo4j.graphdb.Entity node,
                                            String key)

Returns the property stored at key key in the specified property container or null.

Parameters:

node -

key -

Returns:

getNodePropertiesAsString

public static String getNodePropertiesAsString(org.neo4j.graphdb.Entity node)

findFirstValueInArrayProperty

public static int findFirstValueInArrayProperty(org.neo4j.graphdb.Node term,
                                                String key,
                                                String value)

hasSamePropertyValue

public static boolean hasSamePropertyValue(org.neo4j.graphdb.Entity term,
                                           String key,
                                           Object valueToCompare)

Checks whether the property container has the exact valueToCompare as value for the property identified by key.

Parameters:

term -

key -

valueToCompare -

Returns:

hasContradictingPropertyValue

public static boolean hasContradictingPropertyValue(org.neo4j.graphdb.Entity term,
                                                    String key,
                                                    Object valueToCompare)

Determines whether the property container has a value for the property with key key and this value does not equal valueToCompare. I.e. if the property value is null, this is not seen as a contradiction - not even if term of valueToCompare itself is null.

Parameters:

term -

key -

valueToCompare -

Returns:

mergeProperties

public static boolean mergeProperties(org.neo4j.graphdb.Entity propContainer,
                                      Object... properties)