org.gradoop.common.model.impl.metadata

Class MetaData

java.lang.Object

org.gradoop.common.model.impl.metadata.MetaData

public class MetaData
extends Object

Describes the data stored in the vertex and edge CSV files.

Field Summary

Fields

Modifier and Type	Field and Description
protected Map<String,List<PropertyMetaData>>	edgeMetaData Mapping between a graph labels and their associated property meta data.
protected Map<String,List<PropertyMetaData>>	graphMetaData Mapping between a graph labels and their associated property meta data.
static String	PROPERTY_TOKEN_DELIMITER Used to separate property tokens (property-key, property-type)
protected Map<String,List<PropertyMetaData>>	vertexMetaData Mapping between a graph labels and their associated property meta data.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	MetaData(Map<String,List<PropertyMetaData>> graphMetaData, Map<String,List<PropertyMetaData>> vertexMetaData, Map<String,List<PropertyMetaData>> edgeMetaData) Constructor

Method Summary

Modifier and Type	Method and Description
static Class<?>	getClassFromTypeString(String typeString) Get the class corresponding to a type string.
Set<String>	getEdgeLabels() Returns the edge labels available in the meta data.
List<PropertyMetaData>	getEdgePropertyMetaData(String label) Returns the property meta data associated with the specified edge label.
Set<String>	getGraphLabels() Returns the graph labels available in the meta data.
List<PropertyMetaData>	getGraphPropertyMetaData(String label) Returns the property meta data associated with the specified graph label.
static String	getTypeString(PropertyValue propertyValue) Returns the type string for the specified property value.
Set<String>	getVertexLabels() Returns the vertex labels available in the meta data.
List<PropertyMetaData>	getVertexPropertyMetaData(String label) Returns the property meta data associated with the specified vertex label.

Methods inherited from class java.lang.Object

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

Field Detail

PROPERTY_TOKEN_DELIMITER

public static final String PROPERTY_TOKEN_DELIMITER

Used to separate property tokens (property-key, property-type)

See Also:

Constant Field Values

graphMetaData

protected Map<String,List<PropertyMetaData>> graphMetaData

Mapping between a graph labels and their associated property meta data.

vertexMetaData

protected Map<String,List<PropertyMetaData>> vertexMetaData

Mapping between a graph labels and their associated property meta data.

edgeMetaData

protected Map<String,List<PropertyMetaData>> edgeMetaData

Mapping between a graph labels and their associated property meta data.

Constructor Detail

MetaData

protected MetaData(Map<String,List<PropertyMetaData>> graphMetaData,
                   Map<String,List<PropertyMetaData>> vertexMetaData,
                   Map<String,List<PropertyMetaData>> edgeMetaData)

Constructor

Parameters:

graphMetaData - a map between each graph label and its property metadata

vertexMetaData - a map between each vertex label and its property metadata

edgeMetaData - a map between each edge label and its property metadata

Method Detail

getClassFromTypeString

public static Class<?> getClassFromTypeString(String typeString)

Get the class corresponding to a type string.

Parameters:

typeString - a type string

Returns:

the corresponding class

getGraphLabels

public Set<String> getGraphLabels()

Returns the graph labels available in the meta data.

Returns:

graph labels

getVertexLabels

public Set<String> getVertexLabels()

Returns the vertex labels available in the meta data.

Returns:

vertex labels

getEdgeLabels

public Set<String> getEdgeLabels()

Returns the edge labels available in the meta data.

Returns:

edge labels

getGraphPropertyMetaData

public List<PropertyMetaData> getGraphPropertyMetaData(String label)

Returns the property meta data associated with the specified graph label.

Parameters:

label - graph label

Returns:

property meta data for the graph label

getVertexPropertyMetaData

public List<PropertyMetaData> getVertexPropertyMetaData(String label)

Returns the property meta data associated with the specified vertex label.

Parameters:

label - vertex label

Returns:

property meta data for the vertex label

getEdgePropertyMetaData

public List<PropertyMetaData> getEdgePropertyMetaData(String label)

Returns the property meta data associated with the specified edge label.

Parameters:

label - edge label

Returns:

property meta data for the edge label

getTypeString

public static String getTypeString(PropertyValue propertyValue)

Returns the type string for the specified property value.

Parameters:

propertyValue - property value

Returns:

property type string