Package org.drools.drl.ast.dsl.impl

Class AccumulateDescrBuilderImpl<P extends DescrBuilder<?,?>>

java.lang.Object
org.drools.drl.ast.dsl.impl.BaseDescrBuilderImpl<P,AccumulateDescr>
org.drools.drl.ast.dsl.impl.AccumulateDescrBuilderImpl<P>
All Implemented Interfaces:
AccumulateDescrBuilder<P>, DescrBuilder<P,AccumulateDescr>
Direct Known Subclasses:
GroupByDescrBuilderImpl
public class AccumulateDescrBuilderImpl<P extends DescrBuilder<?,?>> extends BaseDescrBuilderImpl<P,AccumulateDescr> implements AccumulateDescrBuilder<P>
An implementation for the CollectDescrBuilder

  • Constructor Details

    • AccumulateDescrBuilderImpl

      public AccumulateDescrBuilderImpl(P parent)

    • AccumulateDescrBuilderImpl

      protected AccumulateDescrBuilderImpl(P parent, AccumulateDescr accumulateDescr)

  • Method Details

    • pattern

      public PatternDescrBuilder<AccumulateDescrBuilder<P>> pattern(String type)

    • pattern

      public PatternDescrBuilder<AccumulateDescrBuilder<P>> pattern()

    • source

      public CEDescrBuilder<AccumulateDescrBuilder<P>,AndDescr> source()
      Description copied from interface: AccumulateDescrBuilder
      Defines the source CE for the Accumulate CE. It is always an AND descriptor that contains one or more Patterns and other CEs.
      Specified by:
      source in interface AccumulateDescrBuilder<P extends DescrBuilder<?,?>>
      Returns:
      the CEDescrBuilder for the source CE

    • function

      public AccumulateDescrBuilder<P> function(String name, String bind, boolean unif, String... parameters)
      Description copied from interface: AccumulateDescrBuilder
      For accumulate CEs that use accumulate functions, this call instantiate one accumulate function call. Example: ... accumulate( X(), $sum : sum( $value ) ) Requires the call to this method with parameters: function( "sum", "$sum", new String[] { "$value" } ) Please note that accumulate supports multiple function calls and this method should be called for each function call. Accumulate uses either accumulate functions or the custom code blocks (init/action/reverse/result). It is not possible to mix them.
      Specified by:
      function in interface AccumulateDescrBuilder<P extends DescrBuilder<?,?>>
      Parameters:
      name - the name of the function being called. Mandatory non-null parameter.
      bind - the name of the bound variable if there is one. Null if no binding should be made.
      unif - true if the bound variable is expected to unify with the result of the acc function. false otherwise
      parameters - the array of parameters to the function.
      Returns:
      itself, so that it can be used as a fluent API

    • init

      public AccumulateDescrBuilder<P> init(String block)
      Description copied from interface: AccumulateDescrBuilder
      For accumulate CEs that use custom code blocks, this call sets the content of the init code block. Please node that the use of custom code blocks is discouraged, as they are usually a bad practice. Accumulate uses either accumulate functions or the custom code blocks (init/action/reverse/result). It is not possible to mix them.
      Specified by:
      init in interface AccumulateDescrBuilder<P extends DescrBuilder<?,?>>
      Parameters:
      block - the code for this block
      Returns:
      itself, so that it can be used as a fluent API

    • action

      public AccumulateDescrBuilder<P> action(String block)
      Description copied from interface: AccumulateDescrBuilder
      For accumulate CEs that use custom code blocks, this call sets the content of the action code block. Please node that the use of custom code blocks is discouraged, as they are usually a bad practice. Accumulate uses either accumulate functions or the custom code blocks (init/action/reverse/result). It is not possible to mix them.
      Specified by:
      action in interface AccumulateDescrBuilder<P extends DescrBuilder<?,?>>
      Parameters:
      block - the code for this block
      Returns:
      itself, so that it can be used as a fluent API

    • reverse

      public AccumulateDescrBuilder<P> reverse(String block)
      Description copied from interface: AccumulateDescrBuilder
      For accumulate CEs that use custom code blocks, this call sets the content of the reverse code block. Please node that the use of custom code blocks is discouraged, as they are usually a bad practice. Accumulate uses either accumulate functions or the custom code blocks (init/action/reverse/result). It is not possible to mix them.
      Specified by:
      reverse in interface AccumulateDescrBuilder<P extends DescrBuilder<?,?>>
      Parameters:
      block - the code for this block
      Returns:
      itself, so that it can be used as a fluent API

    • result

      public AccumulateDescrBuilder<P> result(String expr)
      Description copied from interface: AccumulateDescrBuilder
      For accumulate CEs that use custom code blocks, this call sets the content of the result expression. Please node that the use of custom code blocks is discouraged, as they are usually a bad practice. Accumulate uses either accumulate functions or the custom code blocks (init/action/reverse/result). It is not possible to mix them.
      Specified by:
      result in interface AccumulateDescrBuilder<P extends DescrBuilder<?,?>>
      Parameters:
      expr - the return expr
      Returns:
      itself, so that it can be used as a fluent API

    • constraint

      public AccumulateDescrBuilder<P> constraint(String constr)
      Specified by:
      constraint in interface AccumulateDescrBuilder<P extends DescrBuilder<?,?>>