Examples of com.espertech.esper.client.soda.EPStatementObjectModel

com.espertech.esper.client.soda.EPStatementObjectModel
Object model of an EPL statement.
Applications can create an object model by instantiating this class and then setting the various clauses. When done, use {@link com.espertech.esper.client.EPAdministrator} to create a statement from the model.
Alternativly, a given textual EPL can be compiled into an object model representation via the compile method on {@link com.espertech.esper.client.EPAdministrator}.
Use the toEPL method to generate a textual EPL from an object model.
Minimally, and EPL statement consists of the select-clause and the where-clause. These are represented by {@link SelectClause}and {@link FromClause} respectively.
Here is a short example that create a simple EPL statement such as "select page, responseTime from PageLoad" :
```
 EPStatementObjectModel model = new EPStatementObjectModel(); model.setSelectClause(SelectClause.create("page", "responseTime")); model.setFromClause(FromClause.create(FilterStream.create("PageLoad"))); 
```
The select-clause and from-clause must be set for the statement object model to be useable by the administrative API. All other clauses a optional.
Please see the documentation set for further examples.

    }
    _log.debug("Adding statements to Esper service");
    final EPAdministrator epAdmin = _epService.getEPAdministrator();
    for (String epStatement : _epStatements) {
      _log.debug("Compiling Esper statement {}", epStatement);
      final EPStatementObjectModel stmtModel = epAdmin
          .compileEPL(epStatement);
      final EPStatement stmt = epAdmin.create(stmtModel);
      final String stmtName = Integer.toString(epStatement.hashCode());
      // TODO fast hack disabling queues, since they are currently not
      // supported by Streams-Storm.

View Full Code Here

      _log.info("Compiling statement {}", epStatement);
      _log.debug("Compiling Esper statement {}",
          epStatement.getEsperStatement());


      // Create a template for the statement in the current Esper engine.
      final EPStatementObjectModel stmtModel = epAdmin
          .compileEPL(epStatement.getEsperStatement());


      // Create the actual statement in the current Esper engine from the
      // statement model.
      final String stmtName = epStatement.getName();

View Full Code Here

    _log.debug("Compiling Esper statement {}", epStatement.getStatement());


    final EPAdministrator epAdmin = _epService.getEPAdministrator();


    // Create a template for the statement in the current Esper engine.
    final EPStatementObjectModel stmtModel = epAdmin.compileEPL(epStatement
        .getStatement());
    final EsperStreamEventTypeVisitor esperStreamVisitor = new EsperStreamEventTypeVisitor(
        _epService.getEPAdministrator().getConfiguration());
    for (Stream s : stmtModel.getFromClause().getStreams()) {
      esperStreamVisitor.visitStream(s);
    }


    // Create the actual statement in the current Esper engine from the
    // statement model.

View Full Code Here

    for (StatementBean epStatement : _esperStatements) {
      _log.info("Compiling statement {}", epStatement);
      _log.debug("Compiling Esper statement {}", epStatement.getEsperStatement());


      // Create a template for the statement in the current Esper engine.
      final EPStatementObjectModel stmtModel = epAdmin
          .compileEPL(epStatement.getEsperStatement());


      // Create the actual statement in the current Esper engine from the
      // statement model.
      final String stmtName = epStatement.getName();

View Full Code Here

    // declare an output sink.
    for (String epStatement : _epStatements) {
      _log.debug("Compiling Esper statement {}", epStatement);


      // Create a template for the statement in the current Esper engine.
      final EPStatementObjectModel stmtModel = epAdmin
          .compileEPL(epStatement);


      // Create the actual statement in the current Esper engine from the
      // statement model.
      final EPStatement stmt = epAdmin.create(stmtModel);

View Full Code Here

TOP

Related Classes of com.espertech.esper.client.soda.EPStatementObjectModel

ch.uzh.ifi.ddis.ifp.streams.EsperProcessor

streams.esper.EsperEngine

java.io.StringWriter

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.