scriptella.core.DynamicContext Maven / Gradle / Ivy
/*
* Copyright 2006-2012 The Scriptella Project Team.
*
* Licensed 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 scriptella.core;
import scriptella.execution.EtlContext;
import scriptella.spi.Connection;
import scriptella.spi.ParametersCallback;
/**
* Represents dynamic execution context for executable elements.
* TODO: Probably it's better to extract interface from this class
* and merge implementation with {@link scriptella.execution.EtlContext}
*
* @author Fyodor Kupolov
* @version 1.0
*/
@ThreadSafe
public class DynamicContext implements ParametersCallback {
protected EtlContext globalContext;
protected EtlVariable etlVariable;
protected DynamicContext() {
}
public DynamicContext(EtlContext globalContext) {
this.globalContext = globalContext;
}
public Object getParameter(final String name) {
if (EtlVariable.NAME.equals(name)) {
if (etlVariable == null) {
etlVariable = new EtlVariable(this, globalContext.getGlobalVariables());
}
return etlVariable;
}
return globalContext.getParameter(name);
}
public Connection getConnection() {
final ConnectionManager cf = globalContext.getSession()
.getConnection(null);
return cf.getConnection();
}
protected EtlContext getGlobalContext() {
return globalContext;
}
}