Package net.sf.basedb.util.jep

Class ReporterFunction

java.lang.Object
net.sf.basedb.util.jep.ReporterFunction
All Implemented Interfaces:
JepExpressionFunction, JepFunction, org.nfunk.jep.function.PostfixMathCommandI
public class ReporterFunction extends Object implements JepExpressionFunction
A JEP function class that adds a rep(string) or mrep(string) function to a JEP expression parser. The function will look up the value of the reporter property with the given name. For example: rep('sequence')

If the mrep variant is used, the master reporter table is used, otherwise the actual query can decide if it should use cloned reporter information or not.

To be able to use this function it must be registered with the JEP parser and, before the expression is evaluated, a reporter object must be set. For example we can evaluate an expression for every reporter object: 

DbControl dc = ...
RawBioAssay assay = ...
String expression = "rep('sequence')";
ReporterFunction rep = new RepFunction();
JEP jep = JepUtil.newJep(expression, rep);
DataResultIterator<RawData> result = 
   assay.getRawData().iterate(dc);
while (result.hasNext())
{
   rep.setReporter(result.next().getReporter());
   String value = jep.getValue();
   // Do something with the value
}
result.close();
Version:
2.0
Author:
Nicklas
See Also:
Last modified
$Date: 2015-04-20 11:08:18 +0200 (må, 20 apr 2015) $

  • Field Details

    • metaData

      private final Metadata<ReporterData> metaData

    • dc

      private final DbControl dc

    • master

      private final boolean master

    • numParameters

      private int numParameters

    • reporter

      private ReporterData reporter

  • Constructor Details

    • ReporterFunction

      public ReporterFunction()
      Create a new instance of this function. The new instance cannot be used to dynamically evaluate expressions. It should only be used for converting JEP formulas to Expression:s.
      See Also:

    • ReporterFunction

      public ReporterFunction(boolean master)
      Create a new instance of this function. The new instance cannot be used to dynamically evaluate expressions. It should only be used for converting JEP formulas to Expression:s. If
      Parameters:
      master - TRUE to force using the master reporter table, FALSE to let the query decide
      Since:
      3.1

    • ReporterFunction

      public ReporterFunction(DbControl dc, RawDataType rawDataType)
      Create a new instance of this function working with reporters.

  • Method Details

    • getFunctionName

      public String getFunctionName()
      Description copied from interface: JepFunction
      Get the name of this function. It is used when registering the function with a JEP parser.
      Specified by:
      getFunctionName in interface JepFunction
      Returns:
      The string "rep" or "mrep"
      See Also:

    • toExpression

      public Expression toExpression(Node node)
      Use the Dynamic.reporter(String) method to create an expression referencing a reporter property.
      Specified by:
      toExpression in interface JepExpressionFunction
      Parameters:
      node - The node representing this function
      Returns:
      An Expression object

    • getNumberOfParameters

      public int getNumberOfParameters()
      Specified by:
      getNumberOfParameters in interface org.nfunk.jep.function.PostfixMathCommandI
      Returns:
      Always 1

    • setCurNumberOfParameters

      public void setCurNumberOfParameters(int n)
      Specified by:
      setCurNumberOfParameters in interface org.nfunk.jep.function.PostfixMathCommandI

    • checkNumberOfParameters

      public boolean checkNumberOfParameters(int n)
      Specified by:
      checkNumberOfParameters in interface org.nfunk.jep.function.PostfixMathCommandI

    • run

      public void run(Stack stack) throws ParseException
      Specified by:
      run in interface org.nfunk.jep.function.PostfixMathCommandI
      Throws:
      ParseException

    • setReporter

      public void setReporter(ReporterData reporter)
      Set a new reporter object that will be used the next time the JEP expression is evaluated.
      Parameters:
      reporter - The reporter object to use

    • getReporter

      public ReporterData getReporter()
      Get the current reporter object used when evaluating the JEP expression.

    • raw

      public Object raw(String propertyName) throws ParseException
      Get the value of the specified property of the current raw data object. This method uses Hibernate metadata to find the value.
      Parameters:
      propertyName - The name of the raw data property
      Returns:
      an java.lang.Object
      Throws:
      ParseException - If the argument is null or 'reporter' not specified.