com.julienviet.rxjava.pgclient.PgCursor Maven / Gradle / Ivy

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/*
 * Copyright 2014 Red Hat, Inc.
 *
 * Red Hat 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 com.julienviet.rxjava.pgclient;

import java.util.Map;
import rx.Observable;
import rx.Single;
import io.vertx.core.AsyncResult;
import io.vertx.core.Handler;

/**
 * A cursor that reads progressively the rows from Postgres, it is usefull for reading very large result.
 *
 * 
 * NOTE: This class has been automatically generated from the {@link com.julienviet.pgclient.PgCursor original} non RX-ified interface using Vert.x codegen.
 */

@io.vertx.lang.rxjava.RxGen(com.julienviet.pgclient.PgCursor.class)
public class PgCursor {

  @Override
  public String toString() {
    return delegate.toString();
  }

  @Override
  public boolean equals(Object o) {
    if (this == o) return true;
    if (o == null || getClass() != o.getClass()) return false;
    PgCursor that = (PgCursor) o;
    return delegate.equals(that.delegate);
  }
  
  @Override
  public int hashCode() {
    return delegate.hashCode();
  }

  public static final io.vertx.lang.rxjava.TypeArg __TYPE_ARG = new io.vertx.lang.rxjava.TypeArg<>(
    obj -> new PgCursor((com.julienviet.pgclient.PgCursor) obj),
    PgCursor::getDelegate
  );

  private final com.julienviet.pgclient.PgCursor delegate;
  
  public PgCursor(com.julienviet.pgclient.PgCursor delegate) {
    this.delegate = delegate;
  }

  public com.julienviet.pgclient.PgCursor getDelegate() {
    return delegate;
  }

  /**
   * Read rows from the cursor, the result is provided asynchronously to the handler.
   * @param count the amount of rows to read
   * @param handler the handler for the result
   */
  public void read(int count, Handler>> handler) { 
    delegate.read(count, new Handler>>() {
      public void handle(AsyncResult> ar) {
        if (ar.succeeded()) {
          handler.handle(io.vertx.core.Future.succeededFuture(PgResult.newInstance(ar.result(), com.julienviet.rxjava.pgclient.Row.__TYPE_ARG)));
        } else {
          handler.handle(io.vertx.core.Future.failedFuture(ar.cause()));
        }
      }
    });
  }

  /**
   * Read rows from the cursor, the result is provided asynchronously to the handler.
   * @param count the amount of rows to read
   * @return 
   */
  public Single> rxRead(int count) { 
    return Single.create(new io.vertx.rx.java.SingleOnSubscribeAdapter<>(fut -> {
      read(count, fut);
    }));
  }

  /**
   * Returns true when the cursor has results in progress and the  should be called to retrieve
   * them.
   * @return whether the cursor has more results,
   */
  public boolean hasMore() { 
    boolean ret = delegate.hasMore();
    return ret;
  }

  /**
   * Release the cursor.
   * 
   * It should be called for prepared queries executed with a fetch size.
   */
  public void close() { 
    delegate.close();
  }

  /**
   * Like {@link com.julienviet.rxjava.pgclient.PgCursor#close} but with a completionHandler called when the cursor has been released.
   * @param completionHandler 
   */
  public void close(Handler> completionHandler) { 
    delegate.close(completionHandler);
  }

  /**
   * Like {@link com.julienviet.rxjava.pgclient.PgCursor#close} but with a completionHandler called when the cursor has been released.
   * @return 
   */
  public Single rxClose() { 
    return Single.create(new io.vertx.rx.java.SingleOnSubscribeAdapter<>(fut -> {
      close(fut);
    }));
  }


  public static  PgCursor newInstance(com.julienviet.pgclient.PgCursor arg) {
    return arg != null ? new PgCursor(arg) : null;
  }
}