@Override
public PropertyKey make() {
Preconditions.checkArgument(dataType != null, "Need to specify a datatype");
Preconditions.checkArgument(
tx.validDataType(dataType), "Not a supported data type: %s", dataType);
Preconditions.checkArgument(
!dataType.isPrimitive(),
"Primitive types are not supported. Use the corresponding object type, e.g. Integer.class instead of int.class [%s]",
dataType);
Preconditions.checkArgument(
!dataType.isInterface(), "Datatype must be a class and not an interface: %s", dataType);
Preconditions.checkArgument(
dataType.isArray() || !Modifier.isAbstract(dataType.getModifiers()),
"Datatype cannot be an abstract class: %s",
dataType);
TypeDefinitionMap definition = makeDefinition();
definition.setValue(DATATYPE, dataType);
return tx.makePropertyKey(getName(), definition);
}
public TitanGraphIndex getExternalIndex(Class<? extends Element> clazz, String backingIndex) {
String prefix;
if (Vertex.class.isAssignableFrom(clazz)) prefix = "v";
else if (Edge.class.isAssignableFrom(clazz)) prefix = "e";
else if (TitanVertexProperty.class.isAssignableFrom(clazz)) prefix = "p";
else throw new AssertionError(clazz.toString());
String indexName = prefix + backingIndex;
TitanGraphIndex index = mgmt.getGraphIndex(indexName);
if (index == null) {
index = mgmt.buildIndex(indexName, clazz).buildMixedIndex(backingIndex);
}
return index;
}