Package org.neo4j.cypher.javacompat

Examples of org.neo4j.cypher.javacompat.ExecutionResult

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  public Node findNode(Key key, NodeLabel label) {
    Map<String, Object> parameters = new HashMap<String, Object>( key.getColumnNames().length );
    StringBuilder query = new StringBuilder( "MATCH" );
    appendNodePattern( key, parameters, query, label );
    query.append( " RETURN n" );
    ExecutionResult result = engine.execute( query.toString(), parameters );
    ResourceIterator<Node> column = result.columnAs( "n" );
    Node node = null;
    if ( column.hasNext() ) {
      node = column.next();
    }
    column.close();
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   *
   * @return the {@link ResourceIterator} with the results
   */
  public ResourceIterator<Node> findNodes(String tableName) {
    String query = "MATCH (n:`" + tableName + "`) RETURN n";
    ExecutionResult result = engine.execute( query.toString() );
    return result.columnAs( "n" );
  }
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  public Node createNodeUnlessExists(Key key, NodeLabel label) {
    Map<String, Object> parameters = new HashMap<String, Object>( key.getColumnNames().length );
    StringBuilder query = new StringBuilder( "MERGE" );
    appendNodePattern( key, parameters, query, label );
    query.append( " RETURN n" );
    ExecutionResult result = engine.execute( query.toString(), parameters );
    ResourceIterator<Node> column = result.columnAs( "n" );
    Node node = null;
    if ( column.hasNext() ) {
      node = column.next();
    }
    column.close();
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  @Override
  public ClosableIterator<Tuple> executeBackendQuery(BackendQuery<String> backendQuery, QueryParameters queryParameters) {
    Map<String, Object> parameters = getNamedParameterValuesConvertedByGridType( queryParameters );
    String nativeQuery = buildNativeQuery( backendQuery, queryParameters );
    ExecutionResult result = executionEngine.execute( nativeQuery, parameters );

    if ( backendQuery.getSingleEntityKeyMetadataOrNull() != null ) {
      return new NodesTupleIterator( result );
    }
    return new MapsTupleIterator( result );
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  @Override
  public ClosableIterator<Tuple> executeBackendQuery(BackendQuery<String> backendQuery, QueryParameters queryParameters) {
    Map<String, Object> parameters = getNamedParameterValuesConvertedByGridType( queryParameters );
    String nativeQuery = buildNativeQuery( backendQuery, queryParameters );
    ExecutionResult result = neo4jCRUD.executeQuery( nativeQuery, parameters );

    if ( backendQuery.getSingleEntityKeyMetadataOrNull() != null ) {
      return new NodesTupleIterator( result );
    }
    return new MapsTupleIterator( result );
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    query.append( " - " );
    query.append( relationshipCypher( associationKey, rowKey, parameters ) );
    query.append( " - " );
    appendNodePattern( "t", targetKey, parameters, query );
    query.append( " RETURN r" );
    ExecutionResult result = engine.execute( query.toString(), parameters );
    ResourceIterator<Relationship> column = result.columnAs( "r" );
    Relationship relationship = null;
    if ( column.hasNext() ) {
      relationship = column.next();
    }
    column.close();
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  public Node findNode(Key key, NodeLabel... labels) {
    Map<String, Object> parameters = new HashMap<String, Object>( key.getColumnNames().length );
    StringBuilder query = new StringBuilder( "MATCH" );
    appendNodePattern( key, parameters, query, labels );
    query.append( " RETURN n" );
    ExecutionResult result = engine.execute( query.toString(), parameters );
    ResourceIterator<Node> column = result.columnAs( "n" );
    Node node = null;
    if ( column.hasNext() ) {
      node = column.next();
    }
    column.close();
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   *
   * @return the {@link ResourceIterator} with the results
   */
  public ResourceIterator<Node> findNodes(String tableName) {
    String query = "MATCH (n:`" + tableName + "`) RETURN n";
    ExecutionResult result = engine.execute( query.toString() );
    return result.columnAs( "n" );
  }
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  public Node createNodeUnlessExists(Key key, NodeLabel label) {
    Map<String, Object> parameters = new HashMap<String, Object>( key.getColumnNames().length );
    StringBuilder query = new StringBuilder( "MERGE" );
    appendNodePattern( key, parameters, query, label );
    query.append( " RETURN n" );
    ExecutionResult result = engine.execute( query.toString(), parameters );
    ResourceIterator<Node> column = result.columnAs( "n" );
    Node node = null;
    if ( column.hasNext() ) {
      node = column.next();
    }
    column.close();
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  public Node createNode(Key key, NodeLabel label) {
    Map<String, Object> parameters = new HashMap<String, Object>( key.getColumnNames().length );
    StringBuilder query = new StringBuilder( "CREATE" );
    appendNodePattern( key, parameters, query, label );
    query.append( " RETURN n" );
    ExecutionResult result = engine.execute( query.toString(), parameters );
    ResourceIterator<Node> column = result.columnAs( "n" );
    Node node = null;
    if ( column.hasNext() ) {
      node = column.next();
    }
    column.close();
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