Examples with CountStatements org.neo4j.ogm.session.request.strategy.impl.CountStatements used on opensource projects

Example 1 with CountStatements

use of org.neo4j.ogm.session.request.strategy.impl.CountStatements in project neo4j-ogm by neo4j.

the class ExecuteQueriesDelegate method count.

public long count(Class<?> clazz, Iterable<Filter> filters) {
    ClassInfo classInfo = session.metaData().classInfo(clazz.getSimpleName());
    if (classInfo != null) {
        resolvePropertyAnnotations(clazz, filters);
        CypherQuery query;
        if (classInfo.isRelationshipEntity()) {
            query = new CountStatements().countEdges(classInfo.neo4jName(), filters);
        } else {
            query = new CountStatements().countNodes(classInfo.neo4jName(), filters);
        }
        return count(query, classInfo.isRelationshipEntity());
    }
    throw new RuntimeException(clazz.getName() + " is not a persistable class");
}

Example 2 with CountStatements

use of org.neo4j.ogm.session.request.strategy.impl.CountStatements in project neo4j-ogm by neo4j.

the class ExecuteQueriesDelegate method countEntitiesOfType.

public long countEntitiesOfType(Class<?> entity) {
    ClassInfo classInfo = session.metaData().classInfo(entity.getName());
    if (classInfo == null) {
        return 0;
    }
    CypherQuery countStatement;
    if (classInfo.isRelationshipEntity()) {
        ClassInfo startNodeInfo = null;
        ClassInfo endNodeInfo = null;
        for (FieldInfo fieldInfo : classInfo.fieldsInfo().fields()) {
            if (fieldInfo.hasAnnotation(StartNode.class)) {
                startNodeInfo = session.metaData().classInfo(DescriptorMappings.getType(fieldInfo.getTypeDescriptor()).getName());
            } else if (fieldInfo.hasAnnotation(EndNode.class)) {
                endNodeInfo = session.metaData().classInfo(DescriptorMappings.getType(fieldInfo.getTypeDescriptor()).getName());
            }
            if (endNodeInfo != null && startNodeInfo != null) {
                break;
            }
        }
        String start = startNodeInfo.neo4jName();
        String end = endNodeInfo.neo4jName();
        String type = classInfo.neo4jName();
        countStatement = new CountStatements().countEdges(start, type, end);
    } else {
        Collection<String> labels = classInfo.staticLabels();
        if (labels.isEmpty()) {
            return 0;
        }
        countStatement = new CountStatements().countNodes(labels);
    }
    return session.doInTransaction(() -> {
        try (Response<RowModel> response = session.requestHandler().execute((RowModelRequest) countStatement)) {
            RowModel queryResult = response.next();
            return queryResult == null ? 0 : ((Number) queryResult.getValues()[0]).longValue();
        }
    }, Transaction.Type.READ_ONLY);
}