org.s1ck.gdl

Class GDLHandler

java.lang.Object

org.s1ck.gdl.GDLHandler

public class GDLHandler
extends Object

Helper class that wraps ANTLR initialization logic.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	GDLHandler.Builder Builds a GDL Handler.

Method Summary

Modifier and Type	Method and Description
void	append(String asciiString) Append the given GDL string to the current database.
Map<String,Edge>	getEdgeCache() Returns a cache that contains a mapping from user-defined variables to edge instances.
Map<String,Edge>	getEdgeCache(boolean includeUserDefined, boolean includeAutoGenerated) Returns a cache that contains a mapping from variables to edge instances.
Collection<Edge>	getEdges() Returns a collection of all edges defined in the GDL script.
Map<String,Graph>	getGraphCache() Returns a cache that contains a mapping from user-defined variables to graph instances.
Map<String,Graph>	getGraphCache(boolean includeUserDefined, boolean includeAutoGenerated) Returns a cache that contains a mapping from variables to graph instances.
Collection<Graph>	getGraphs() Returns a collection of all graphs defined in the GDL script.
Optional<Predicate>	getPredicates() Returns the predicates defined by the query in CNF.
Map<String,Vertex>	getVertexCache() Returns a cache that contains a mapping from user-defined variables to vertex instances.
Map<String,Vertex>	getVertexCache(boolean includeUserDefined, boolean includeAutoGenerated) Returns a cache that contains a mapping from variables to vertex instances.
Collection<Vertex>	getVertices() Returns a collection of all vertices defined in the GDL script.

Methods inherited from class java.lang.Object

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

Method Detail

append

public void append(String asciiString)

Append the given GDL string to the current database.

Parameters:

asciiString - GDL string (must not be null).

getGraphs

public Collection<Graph> getGraphs()

Returns a collection of all graphs defined in the GDL script.

Returns:

graph collection

getVertices

public Collection<Vertex> getVertices()

Returns a collection of all vertices defined in the GDL script.

Returns:

vertex collection

getEdges

public Collection<Edge> getEdges()

Returns a collection of all edges defined in the GDL script.

Returns:

edge collection

getPredicates

public Optional<Predicate> getPredicates()

Returns the predicates defined by the query in CNF.

Returns:

predicates

getGraphCache

public Map<String,Graph> getGraphCache()

Returns a cache that contains a mapping from user-defined variables to graph instances.

Returns:

immutable graph cache

getGraphCache

public Map<String,Graph> getGraphCache(boolean includeUserDefined,
                                       boolean includeAutoGenerated)

Returns a cache that contains a mapping from variables to graph instances.

Parameters:

includeUserDefined - true, iff user-defined variables shall be included in the cache

includeAutoGenerated - true, iff auto-generated variables shall be included in the cache

Returns:

immutable graph cache

getVertexCache

public Map<String,Vertex> getVertexCache()

Returns a cache that contains a mapping from user-defined variables to vertex instances.

Returns:

immutable vertex cache

getVertexCache

public Map<String,Vertex> getVertexCache(boolean includeUserDefined,
                                         boolean includeAutoGenerated)

Returns a cache that contains a mapping from variables to vertex instances.

Parameters:

includeUserDefined - true, iff user-defined variables shall be included in the cache

includeAutoGenerated - true, iff auto-generated variables shall be included in the cache

Returns:

immutable vertex cache

getEdgeCache

public Map<String,Edge> getEdgeCache()

Returns a cache that contains a mapping from user-defined variables to edge instances.

Returns:

immutable edge cache

getEdgeCache

public Map<String,Edge> getEdgeCache(boolean includeUserDefined,
                                     boolean includeAutoGenerated)

Returns a cache that contains a mapping from variables to edge instances.

Parameters:

includeUserDefined - true, iff user-defined variables shall be included in the cache

includeAutoGenerated - true, iff auto-generated variables shall be included in the cache

Returns:

immutable edge cache