io.vertx.rxjava.ext.sql

## Class SQLRowStream

- java.lang.Object
- - io.vertx.rxjava.ext.sql.SQLRowStream

- All Implemented Interfaces:
    ReadStream<JsonArray>, StreamBase

      public class SQLRowStream
      extends Object
      implements ReadStream<JsonArray>

  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 `original` non RX-ified interface using Vert.x codegen.

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static io.vertx.lang.rx.TypeArg<SQLRowStream>` | `__TYPE_ARG`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `SQLRowStream(Object delegate)`
    `SQLRowStream(SQLRowStream delegate)`

  - ### Method Summary

    All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `close()` Closes the stream/underlying cursor(s).
    `void` | `close(Handler<AsyncResult<Void>> handler)` Closes the stream/underlying cursor(s).
    `Observable<Void>` | `closeObservable()` Deprecated. use `rxClose()` instead
    `int` | `column(String name)` Will convert the column name to the json array index.
    `List<String>` | `columns()` Returns all column names available in the underlying resultset.
    `SQLRowStream` | `endHandler(Handler<Void> endHandler)` Set an end handler.
    `boolean` | `equals(Object o)`
    `SQLRowStream` | `exceptionHandler(Handler<Throwable> handler)` Set an exception handler on the read stream.
    `ReadStream<JsonArray>` | `fetch(long amount)` Fetch the specified `amount` of elements.
    `SQLRowStream` | `getDelegate()`
    `SQLRowStream` | `handler(Handler<JsonArray> handler)` Set a data handler.
    `int` | `hashCode()`
    `void` | `moreResults()` Request for more results if available
    `static SQLRowStream` | `newInstance(SQLRowStream arg)`
    `SQLRowStream` | `pause()` Pause the `ReadStream`, it sets the buffer in `fetch` mode and clears the actual demand.
    `Pipe<JsonArray>` | `pipe()` Pause this stream and return a to transfer the elements of this stream to a destination .
    `void` | `pipeTo(WriteStream<JsonArray> dst)` Like `ReadStream.pipeTo(io.vertx.rxjava.core.streams.WriteStream<T>)` but with no completion handler.
    `void` | `pipeTo(WriteStream<JsonArray> dst, Handler<AsyncResult<Void>> handler)` Pipe this `ReadStream` to the `WriteStream`.
    `Observable<Void>` | `pipeToObservable(WriteStream<JsonArray> dst)` Deprecated. use `rxPipeTo(io.vertx.rxjava.core.streams.WriteStream<io.vertx.core.json.JsonArray>)` instead
    `SQLRowStream` | `resultSetClosedHandler(Handler<Void> handler)` Event handler when a resultset is closed.
    `SQLRowStream` | `resume()` Resume reading, and sets the buffer in `flowing` mode.
    `Single<Void>` | `rxClose()` Closes the stream/underlying cursor(s).
    `Single<Void>` | `rxPipeTo(WriteStream<JsonArray> dst)` Pipe this `ReadStream` to the `WriteStream`.
    `Observable<JsonArray>` | `toObservable()`
    `String` | `toString()`

    - ### Methods inherited from class java.lang.Object

      `clone, finalize, getClass, notify, notifyAll, wait, wait, wait`

    - ### Methods inherited from interface io.vertx.rxjava.core.streams.ReadStream

      `newInstance, newInstance`

    - ### Methods inherited from interface io.vertx.rxjava.core.streams.StreamBase

      `newInstance`

- - ### Field Detail

    - #### __TYPE_ARG

          public static final io.vertx.lang.rx.TypeArg<SQLRowStream> __TYPE_ARG

  - ### Constructor Detail

    - #### SQLRowStream

          public SQLRowStream(SQLRowStream delegate)

    - #### SQLRowStream

          public SQLRowStream(Object delegate)

  - ### Method Detail

    - #### toString

          public String toString()

      Overrides:
        `toString` in class `Object`

    - #### equals

          public boolean equals(Object o)

      Overrides:
        `equals` in class `Object`

    - #### hashCode

          public int hashCode()

      Overrides:
        `hashCode` in class `Object`

    - #### getDelegate

          public SQLRowStream getDelegate()

      Specified by:
        `getDelegate` in interface `ReadStream<JsonArray>`
      Specified by:
        `getDelegate` in interface `StreamBase`

    - #### toObservable

          public Observable<JsonArray> toObservable()

      Specified by:
        `toObservable` in interface `ReadStream<JsonArray>`

    - #### fetch

          public ReadStream<JsonArray> fetch(long amount)

      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.
      Specified by:
        `fetch` in interface `ReadStream<JsonArray>`
      Parameters:
        `amount` -
      Returns:
        a reference to this, so the API can be used fluently

    - #### pipe

          public Pipe<JsonArray> pipe()

      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`.
      Specified by:
        `pipe` in interface `ReadStream<JsonArray>`
      Returns:
        a pipe

    - #### pipeTo

          public void pipeTo(WriteStream<JsonArray> dst)

      Like `ReadStream.pipeTo(io.vertx.rxjava.core.streams.WriteStream<T>)` but with no completion handler.
      Specified by:
        `pipeTo` in interface `ReadStream<JsonArray>`
      Parameters:
        `dst` -

    - #### pipeTo

          public void pipeTo(WriteStream<JsonArray> dst,
                             Handler<AsyncResult<Void>> 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.

      Specified by:
        `pipeTo` in interface `ReadStream<JsonArray>`
      Parameters:
        `dst` - the destination write stream
        `handler` -

    - #### pipeToObservable

          @Deprecated
          public Observable<Void> pipeToObservable(WriteStream<JsonArray> dst)

      Deprecated. use `rxPipeTo(io.vertx.rxjava.core.streams.WriteStream<io.vertx.core.json.JsonArray>)` instead
      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.

      Parameters:
        `dst` - the destination write stream
      Returns:

    - #### rxPipeTo

          public Single<Void> rxPipeTo(WriteStream<JsonArray> dst)

      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.

      Parameters:
        `dst` - the destination write stream
      Returns:

    - #### exceptionHandler

          public SQLRowStream exceptionHandler(Handler<Throwable> handler)

      Description copied from interface: `ReadStream`
      Set an exception handler on the read stream.
      Specified by:
        `exceptionHandler` in interface `ReadStream<JsonArray>`
      Specified by:
        `exceptionHandler` in interface `StreamBase`
      Parameters:
        `handler` - the exception handler
      Returns:
        a reference to this, so the API can be used fluently

    - #### handler

          public SQLRowStream handler(Handler<JsonArray> handler)

      Description copied from interface: `ReadStream`
      Set a data handler. As data is read, the handler will be called with the data.
      Specified by:
        `handler` in interface `ReadStream<JsonArray>`
      Returns:
        a reference to this, so the API can be used fluently

    - #### pause

          public SQLRowStream pause()

      Description copied from interface: `ReadStream`
      Pause the `ReadStream`, it sets the buffer in `fetch` mode and clears the actual demand.

      While it's paused, no data will be sent to the data `handler`.

      Specified by:
        `pause` in interface `ReadStream<JsonArray>`
      Returns:
        a reference to this, so the API can be used fluently

    - #### resume

          public SQLRowStream resume()

      Description copied from interface: `ReadStream`
      Resume reading, and sets the buffer in `flowing` mode.

      If the `ReadStream` has been paused, reading will recommence on it.
      Specified by:
        `resume` in interface `ReadStream<JsonArray>`
      Returns:
        a reference to this, so the API can be used fluently

    - #### endHandler

          public SQLRowStream endHandler(Handler<Void> endHandler)

      Description copied from interface: `ReadStream`
      Set an end handler. Once the stream has ended, and there is no more data to be read, this handler will be called.
      Specified by:
        `endHandler` in interface `ReadStream<JsonArray>`
      Returns:
        a reference to this, so the API can be used fluently

    - #### column

          public int column(String name)

      Will convert the column name to the json array index.
      Parameters:
        `name` - the column name
      Returns:
        the json array index

    - #### columns

          public List<String> columns()

      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.
      Returns:
        the list of columns names returned by the query

    - #### resultSetClosedHandler

          public SQLRowStream resultSetClosedHandler(Handler<Void> handler)

      Event handler when a resultset is closed. This is useful to request for more results.
      Parameters:
        `handler` - called when the current result set is closed
      Returns:

    - #### moreResults

          public void moreResults()

      Request for more results if available

    - #### close

          public void close()

      Closes the stream/underlying cursor(s). The actual close happens asynchronously.

    - #### close

          public void close(Handler<AsyncResult<Void>> handler)

      Closes the stream/underlying cursor(s). The actual close happens asynchronously.
      Parameters:
        `handler` - called when the stream/underlying cursor(s) is(are) closed

    - #### closeObservable

          @Deprecated
          public Observable<Void> closeObservable()

      Deprecated. use `rxClose()` instead
      Closes the stream/underlying cursor(s). The actual close happens asynchronously.
      Returns:

    - #### rxClose

          public Single<Void> rxClose()

      Closes the stream/underlying cursor(s). The actual close happens asynchronously.
      Returns:

    - #### newInstance

          public static SQLRowStream newInstance(SQLRowStream arg)

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