Examples of javax.ws.rs.core.Response.readEntity()

javax.ws.rs.core.Response.readEntity()
Read the message entity input stream as an instance of specified Java type using a {@link javax.ws.rs.ext.MessageBodyReader} that supports mapping themessage entity stream onto the requested type.
Method throws an {@link MessageProcessingException} if the content of themessage cannot be mapped to an entity of the requested type and {@link IllegalStateException} in case the entity is not backed by an inputstream or if the original entity input stream has already been consumed without {@link #bufferEntity() buffering} the entity data prior consuming.

If the message does not contain an entity body {@code null} is returned.A non-null message instance returned from this method will be cached for subsequent retrievals via {@link #getEntity()}. Unless the supplied entity type is an {@link java.io.InputStream input stream}, this method automatically {@link #close() closes} the an unconsumed original response entity data streamif open. In case the entity data has been buffered, the buffer will be reset prior consuming the buffered data to enable subsequent invocations of {@code readEntity(...)} methods on this response.
@param < T> entity instance Java type. @param entityType the type of entity. @return the message entity; for a zero-length response entities returns {@code null}or a corresponding Java object that represents zero-length data. @throws MessageProcessingException if the content of the message cannot bemapped to an entity of the requested type. @throws IllegalStateException if the entity is not backed by an input stream,the response has been {@link #close() closed} already,or if the entity input stream has been fully consumed already and has not been buffered prior consuming. @see javax.ws.rs.ext.MessageBodyReader @since 2.0

      response = databaseClient.getAssociationById( id );
      if ( response.getStatus() == Response.Status.NOT_FOUND.getStatusCode() ) {
        return null;
      }
      else if ( response.getStatus() == Response.Status.OK.getStatusCode() ) {
        return response.readEntity( AssociationDocument.class );
      }
      else {
        GenericResponse responseEntity = response.readEntity( GenericResponse.class );
        throw logger.errorRetrievingAssociation( id, response.getStatus(), responseEntity.getError(), responseEntity.getReason() );
      }

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      }
      else if ( response.getStatus() == Response.Status.OK.getStatusCode() ) {
        return response.readEntity( AssociationDocument.class );
      }
      else {
        GenericResponse responseEntity = response.readEntity( GenericResponse.class );
        throw logger.errorRetrievingAssociation( id, response.getStatus(), responseEntity.getError(), responseEntity.getReason() );
      }
    }
    catch (ResteasyClientException e) {
      throw logger.couchDBConnectionProblem( e );

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  public void dropDatabase() {
    Response response = null;
    try {
      response = databaseClient.dropDatabase();
      if ( response.getStatus() != Response.Status.OK.getStatusCode() ) {
        GenericResponse responseEntity = response.readEntity( GenericResponse.class );
        throw logger.errorDroppingDatabase( response.getStatus(), responseEntity.getError(), responseEntity.getReason() );
      }
    }
    catch (ResteasyClientException e) {
      throw logger.couchDBConnectionProblem( e );

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    Response response = null;
    try {
      if ( !databaseExists( serverClient, database.getDatabaseName() ) ) {
        response = serverClient.createDatabase( database.getDatabaseName() );
        if ( response.getStatus() != Response.Status.CREATED.getStatusCode() ) {
          GenericResponse entity = response.readEntity( GenericResponse.class );
          throw logger.errorCreatingDatabase( database.getDatabaseName(), response.getStatus(), entity.getError(), entity.getReason() );
        }
      }
    }
    catch (ResteasyClientException e) {

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    Response response = null;
    try {
      response = serverClient.getAllDatabaseNames();
      if ( response.getStatus() == Response.Status.OK.getStatusCode() ) {
        @SuppressWarnings("unchecked")
        List<String> entity = response.readEntity( List.class );
        if ( entity.contains( databaseName ) ) {
          return true;
        }
        return false;
      }

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          return true;
        }
        return false;
      }
      else {
        GenericResponse responseEntity = response.readEntity( GenericResponse.class );
        throw logger.unableToRetrieveTheListOfDatabase( response.getStatus(), responseEntity.getError(), responseEntity.getReason() );
      }
    }
    catch (ProcessingException e) {
      throw logger.couchDBConnectionProblem( e );

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  private List<Tuple> getTuplesByTableName(String tableName) {
    Response response = null;
    try {
      response = databaseClient.getEntityTuplesByTableName( "\"" + tableName + "\"" );
      if ( response.getStatus() == Response.Status.OK.getStatusCode() ) {
        return response.readEntity( EntityTupleRows.class ).getTuples();
      }
      else {
        GenericResponse responseEntity = response.readEntity( GenericResponse.class );
        throw logger.unableToRetrieveTheTupleByEntityKeyMetadata( tableName, response.getStatus(), responseEntity.getError(), responseEntity.getReason() );
      }

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      response = databaseClient.getEntityTuplesByTableName( "\"" + tableName + "\"" );
      if ( response.getStatus() == Response.Status.OK.getStatusCode() ) {
        return response.readEntity( EntityTupleRows.class ).getTuples();
      }
      else {
        GenericResponse responseEntity = response.readEntity( GenericResponse.class );
        throw logger.unableToRetrieveTheTupleByEntityKeyMetadata( tableName, response.getStatus(), responseEntity.getError(), responseEntity.getReason() );
      }
    }
    catch (ResteasyClientException e) {
      throw logger.couchDBConnectionProblem( e );

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    Response response = null;
    try {
      String id = createId( key );
      response = databaseClient.getKeyValueById( id );
      if ( response.getStatus() == Response.Status.OK.getStatusCode() ) {
        return response.readEntity( SequenceDocument.class );
      }
      else if ( response.getStatus() == Response.Status.NOT_FOUND.getStatusCode() ) {
        SequenceDocument identifier = new SequenceDocument( key.getMetadata().getValueColumnName(), initialValue );
        identifier.setId( id );
        return identifier;

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        SequenceDocument identifier = new SequenceDocument( key.getMetadata().getValueColumnName(), initialValue );
        identifier.setId( id );
        return identifier;
      }
      else {
        GenericResponse responseEntity = response.readEntity( GenericResponse.class );
        throw logger.errorRetrievingKeyValue( response.getStatus(), responseEntity.getError(), responseEntity.getReason() );
      }
    }
    catch (ResteasyClientException e) {
      throw logger.couchDBConnectionProblem( e );

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