ProxyRowIterator.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.zeppelin.tabledata;

import org.apache.zeppelin.resource.Resource;

import java.util.Iterator;

/**
 * Proxy row iterator
 */
public class ProxyRowIterator implements Iterator<Row> {

  private final Resource rows;

  public ProxyRowIterator(Resource rows) {
    this.rows = rows;
  }

  @Override
  public boolean hasNext() {
    rows.invokeMethod("hasNext", null, null);
    return false;
  }

  @Override
  public Row next() {
    return (Row) rows.invokeMethod("next", null, null);
  }

  @Override
  public void remove() {
    // operation not supported
  }
}