io.vertx.rxjava.ext.sql.SQLRowStream Maven / Gradle / Ivy
/*
* 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 io.vertx.rxjava.ext.sql;
import rx.Observable;
import rx.Single;
import io.vertx.rx.java.RxHelper;
import io.vertx.rx.java.WriteStreamSubscriber;
import io.vertx.rx.java.SingleOnSubscribeAdapter;
import java.util.Map;
import java.util.Set;
import java.util.List;
import java.util.Iterator;
import java.util.function.Function;
import java.util.stream.Collectors;
import io.vertx.core.Handler;
import io.vertx.core.AsyncResult;
import io.vertx.core.json.JsonObject;
import io.vertx.core.json.JsonArray;
import io.vertx.lang.rx.RxGen;
import io.vertx.lang.rx.TypeArg;
import io.vertx.lang.rx.MappingIterator;
/**
* A ReadStream of Rows from the underlying RDBMS. This class follows the ReadStream semantics and will automatically
* close the underlying resources if all returned rows are returned. For cases where the results are ignored before the
* full processing of the returned rows is complete the close method **MUST** be called in order to release underlying
* resources.
*
* The interface is minimal in order to support all SQL clients not just JDBC.
*
*
* NOTE: This class has been automatically generated from the {@link io.vertx.ext.sql.SQLRowStream original} non RX-ified interface using Vert.x codegen.
*/
@RxGen(io.vertx.ext.sql.SQLRowStream.class)
public class SQLRowStream implements io.vertx.rxjava.core.streams.ReadStream {
@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;
SQLRowStream that = (SQLRowStream) o;
return delegate.equals(that.delegate);
}
@Override
public int hashCode() {
return delegate.hashCode();
}
public static final TypeArg __TYPE_ARG = new TypeArg<>( obj -> new SQLRowStream((io.vertx.ext.sql.SQLRowStream) obj),
SQLRowStream::getDelegate
);
private final io.vertx.ext.sql.SQLRowStream delegate;
public SQLRowStream(io.vertx.ext.sql.SQLRowStream delegate) {
this.delegate = delegate;
}
public SQLRowStream(Object delegate) {
this.delegate = (io.vertx.ext.sql.SQLRowStream)delegate;
}
public io.vertx.ext.sql.SQLRowStream getDelegate() {
return delegate;
}
private Observable observable;
public synchronized Observable toObservable() {
if (observable == null) {
observable = RxHelper.toObservable(this.getDelegate());
}
return observable;
}
/**
* Fetch the specified amount of elements. If the ReadStream has been paused, reading will
* recommence with the specified amount of items, otherwise the specified amount will
* be added to the current stream demand.
* @param amount
* @return a reference to this, so the API can be used fluently
*/
public io.vertx.rxjava.core.streams.ReadStream fetch(long amount) {
delegate.fetch(amount);
return this;
}
/**
* Pause this stream and return a to transfer the elements of this stream to a destination .
*
* The stream will be resumed when the pipe will be wired to a WriteStream.
* @return a pipe
*/
public io.vertx.rxjava.core.streams.Pipe pipe() {
io.vertx.rxjava.core.streams.Pipe ret = io.vertx.rxjava.core.streams.Pipe.newInstance((io.vertx.core.streams.Pipe)delegate.pipe(), TypeArg.unknown());
return ret;
}
/**
* Pipe this ReadStream to the WriteStream.
*
* Elements emitted by this stream will be written to the write stream until this stream ends or fails.
*
* Once this stream has ended or failed, the write stream will be ended and the handler will be
* called with the result.
* @param dst the destination write stream
* @param handler
*/
public void pipeTo(io.vertx.rxjava.core.streams.WriteStream dst, Handler> handler) {
delegate.pipeTo(dst.getDelegate(), handler);
}
/**
* Pipe this ReadStream to the WriteStream.
*
* Elements emitted by this stream will be written to the write stream until this stream ends or fails.
*
* Once this stream has ended or failed, the write stream will be ended and the handler will be
* called with the result.
* @param dst the destination write stream
*/
public void pipeTo(io.vertx.rxjava.core.streams.WriteStream dst) {
pipeTo(dst, ar -> { });
}
/**
* Pipe this ReadStream to the WriteStream.
*
* Elements emitted by this stream will be written to the write stream until this stream ends or fails.
*
* Once this stream has ended or failed, the write stream will be ended and the handler will be
* called with the result.
* @param dst the destination write stream
* @return
*/
public Single rxPipeTo(io.vertx.rxjava.core.streams.WriteStream dst) {
return Single.create(new SingleOnSubscribeAdapter<>(fut -> {
pipeTo(dst, fut);
}));
}
public io.vertx.rxjava.ext.sql.SQLRowStream exceptionHandler(Handler handler) {
delegate.exceptionHandler(handler);
return this;
}
public io.vertx.rxjava.ext.sql.SQLRowStream handler(Handler handler) {
delegate.handler(handler);
return this;
}
public io.vertx.rxjava.ext.sql.SQLRowStream pause() {
delegate.pause();
return this;
}
public io.vertx.rxjava.ext.sql.SQLRowStream resume() {
delegate.resume();
return this;
}
public io.vertx.rxjava.ext.sql.SQLRowStream endHandler(Handler endHandler) {
delegate.endHandler(endHandler);
return this;
}
/**
* Will convert the column name to the json array index.
* @param name the column name
* @return the json array index
*/
public int column(String name) {
int ret = delegate.column(name);
return ret;
}
/**
* Returns all column names available in the underlying resultset. One needs to carefully use this method since in
* contrast to the singular version it does not perform case insensitive lookups or takes alias in consideration on
* the column names.
* @return the list of columns names returned by the query
*/
public List columns() {
List ret = delegate.columns();
return ret;
}
/**
* Event handler when a resultset is closed. This is useful to request for more results.
* @param handler called when the current result set is closed
* @return
*/
public io.vertx.rxjava.ext.sql.SQLRowStream resultSetClosedHandler(Handler handler) {
delegate.resultSetClosedHandler(handler);
return this;
}
/**
* Request for more results if available
*/
public void moreResults() {
delegate.moreResults();
}
/**
* Closes the stream/underlying cursor(s). The actual close happens asynchronously.
*/
public void close() {
delegate.close();
}
/**
* Closes the stream/underlying cursor(s). The actual close happens asynchronously.
* @param handler called when the stream/underlying cursor(s) is(are) closed
*/
public void close(Handler> handler) {
delegate.close(handler);
}
/**
* Closes the stream/underlying cursor(s). The actual close happens asynchronously.
* @return
*/
public Single rxClose() {
return Single.create(new SingleOnSubscribeAdapter<>(fut -> {
close(fut);
}));
}
public static SQLRowStream newInstance(io.vertx.ext.sql.SQLRowStream arg) {
return arg != null ? new SQLRowStream(arg) : null;
}
}