jbpmvariableresolver.java

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package org.jbpm.jpdl.el.impl;


import org.jbpm.context.exe.ContextInstance;
import org.jbpm.graph.exe.ExecutionContext;
import org.jbpm.graph.exe.Token;
import org.jbpm.jpdl.el.ELException;
import org.jbpm.jpdl.el.VariableResolver;

public class JbpmVariableResolver implements VariableResolver {

  public Object resolveVariable(String name) throws ELException {
    ExecutionContext executionContext = ExecutionContext.currentExecutionContext();
    Object value = null;
    
    if ("taskInstance".equals(name)) {
      value = executionContext.getTaskInstance();

    } else if ("processInstance".equals(name)) {
      value = executionContext.getProcessInstance();

    } else if ("processDefinition".equals(name)) {
      value = executionContext.getProcessDefinition();

    } else if ("token".equals(name)) {
      value = executionContext.getToken();

    } else if ("taskMgmtInstance".equals(name)) {
      value = executionContext.getTaskMgmtInstance();
      
    } else if ("contextInstance".equals(name)) {
      value = executionContext.getContextInstance();

    } else if ( (executionContext.getTaskInstance()!=null)
                && (executionContext.getTaskInstance().hasVariableLocally(name))
              ) {
      value = executionContext.getTaskInstance().getVariable(name);

    } else {
      ContextInstance contextInstance = executionContext.getContextInstance();
      Token token = executionContext.getToken();
      value = contextInstance.getVariable(name, token);
    }

    return value;
  }
}