Function GraphContext_AddFullTextIndex

src/graph/graphcontext.c:679–737

create a full text index for the given label and attribute

// create a full text index for the given label and attribute
bool GraphContext_AddFullTextIndex
(
	Index *idx,             // [input/output] index created
	GraphContext *gc,        // graph context
	const char *label,       // label of indexed entities
	const char **fields,     // fields to index
	uint fields_count,       // number of fields to index
	double *weights,         // fields weights
	bool *nostems,           //
	const char **phonetics,  //
	char **stopwords,
	const char *language
) {
	ASSERT(idx    != NULL);
	ASSERT(gc     != NULL);
	ASSERT(label  != NULL);
	ASSERT(fields != NULL);
	ASSERT(fields_count > 0);

	// retrieve the schema for this label
	ResultSet *result_set   = QueryCtx_GetResultSet();
	bool      index_changed = false;
	Schema    *s            = GraphContext_GetSchema(gc, label, SCHEMA_NODE);

	if(s == NULL) {
		s = GraphContext_AddSchema(gc, label, SCHEMA_NODE);
	}

	for(uint i = 0; i < fields_count; i++) {
		const char* field     = fields[i];
		double      weight    = weights[i];
		bool        nostem    = nostems[i];
		const char  *phonetic = phonetics[i];

		IndexField index_field;
		Attribute_ID f_id = GraphContext_FindOrAddAttribute(gc, field, NULL);
		IndexField_New(&index_field, f_id, field, weight, nostem, phonetic);
		if(Schema_AddIndex(idx, s, &index_field, IDX_FULLTEXT) == INDEX_OK) {
			index_changed = true;
			// update result-set
			ResultSet_IndexCreated(result_set, INDEX_OK);
		}
	}

	if(stopwords != NULL) {
		Index_SetStopwords(*idx, stopwords);
	}

	if(language != NULL) {
		Index_SetLanguage(*idx, language);
	}

	// diable index if it was created
	if(index_changed) {
		Index_Disable(*idx);
	}

	return index_changed;