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## org.jbpm.process.instance.impl
Class ReturnValueConstraintEvaluator

    java.lang.Object
      org.jbpm.process.instance.impl.ReturnValueConstraintEvaluator

All Implemented Interfaces:
  Externalizable, Serializable, org.drools.core.spi.Wireable, ConstraintEvaluator, Constraint

    public class ReturnValueConstraintEvaluator

extends Object
implements Constraint, ConstraintEvaluator, org.drools.core.spi.Wireable, Externalizable

Default implementation of a constraint.

See Also:
  Serialized Form

Constructor Summary
`ReturnValueConstraintEvaluator()`

Method Summary
`boolean` | `evaluate(NodeInstance instance, Connection connection, Constraint constraint)`
`String` | `getConstraint()` Typically this method returns the constraint as a String
`String` | `getDialect()` Returns the dialect of the constraint, e.g.
`Object` | `getMetaData(String name)`
`String` | `getName()` Returns the name of the constraint
`int` | `getPriority()` Returns the priority of the constraint
`ReturnValueEvaluator` | `getReturnValueEvaluator()`
`String` | `getType()` Returns the type of the constraint, e.g.
`boolean` | `isDefault()`
`void` | `readExternal(ObjectInput in)`
`void` | `setConstraint(String constraint)` Method for setting the constraint
`void` | `setDefault(boolean isDefault)`
`void` | `setDialect(String dialect)` Method for setting the dialect of the constraint, e.g.
`void` | `setEvaluator(ReturnValueEvaluator evaluator)`
`void` | `setMetaData(String name, Object value)`
`void` | `setName(String name)` Sets the name of the constraint
`void` | `setPriority(int priority)` Method for setting the priority of the constraint
`void` | `setType(String type)` Method for setting the type of the constraint, e.g.
`String` | `toString()`
`void` | `wire(Object object)`
`void` | `writeExternal(ObjectOutput out)`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Constructor Detail

### ReturnValueConstraintEvaluator

    public ReturnValueConstraintEvaluator()

Method Detail

### getConstraint

    public String getConstraint()

  Description copied from interface: `Constraint`
  Typically this method returns the constraint as a String

  Specified by:
    `getConstraint` in interface `Constraint`
  Returns:
    the constraint

### setConstraint

    public void setConstraint(String constraint)

  Description copied from interface: `Constraint`
  Method for setting the constraint

  Specified by:
    `setConstraint` in interface `Constraint`
  Parameters:
    `constraint` - the constraint

### getName

    public String getName()

  Description copied from interface: `Constraint`
  Returns the name of the constraint

  Specified by:
    `getName` in interface `Constraint`
  Returns:
    the name of the constraint

### setName

    public void setName(String name)

  Description copied from interface: `Constraint`
  Sets the name of the constraint

  Specified by:
    `setName` in interface `Constraint`
  Parameters:
    `name` - the name of the constraint

### toString

    public String toString()

  Overrides:
    `toString` in class `Object`

### getPriority

    public int getPriority()

  Description copied from interface: `Constraint`
  Returns the priority of the constraint

  Specified by:
    `getPriority` in interface `Constraint`
  Returns:
    the priority of the constraint

### setPriority

    public void setPriority(int priority)

  Description copied from interface: `Constraint`
  Method for setting the priority of the constraint

  Specified by:
    `setPriority` in interface `Constraint`
  Parameters:
    `priority` - the priority of the constraint

### getDialect

    public String getDialect()

  Description copied from interface: `Constraint`
  Returns the dialect of the constraint, e.g. "mvel" or "java"

  Specified by:
    `getDialect` in interface `Constraint`
  Returns:
    the dialect of the constraint

### setDialect

    public void setDialect(String dialect)

  Description copied from interface: `Constraint`
  Method for setting the dialect of the constraint, e.g. "mvel" or "java"

  Specified by:
    `setDialect` in interface `Constraint`
  Parameters:
    `dialect` - the dialect of the constraint

### getType

    public String getType()

  Description copied from interface: `Constraint`
  Returns the type of the constraint, e.g. "code" or "rule"

  Specified by:
    `getType` in interface `Constraint`
  Returns:
    the type of the constraint

### setType

    public void setType(String type)

  Description copied from interface: `Constraint`
  Method for setting the type of the constraint, e.g. "code" or "rule"

  Specified by:
    `setType` in interface `Constraint`
  Parameters:
    `type` - the type of the constraint

### isDefault

    public boolean isDefault()

  Specified by:
    `isDefault` in interface `Constraint`

### setDefault

    public void setDefault(boolean isDefault)

  Specified by:
    `setDefault` in interface `Constraint`

### wire

    public void wire(Object object)

  Specified by:
    `wire` in interface `org.drools.core.spi.Wireable`

### setEvaluator

    public void setEvaluator(ReturnValueEvaluator evaluator)

### getReturnValueEvaluator

    public ReturnValueEvaluator getReturnValueEvaluator()

### evaluate

    public boolean evaluate(NodeInstance instance,
                            Connection connection,
                            Constraint constraint)

  Specified by:
    `evaluate` in interface `ConstraintEvaluator`

### readExternal

    public void readExternal(ObjectInput in)
                      throws IOException,
                             ClassNotFoundException

  Specified by:
    `readExternal` in interface `Externalizable`
  Throws:
    `IOException`
    `ClassNotFoundException`

### writeExternal

    public void writeExternal(ObjectOutput out)
                       throws IOException

  Specified by:
    `writeExternal` in interface `Externalizable`
  Throws:
    `IOException`

### setMetaData

    public void setMetaData(String name,
                            Object value)

  Specified by:
    `setMetaData` in interface `Constraint`

### getMetaData

    public Object getMetaData(String name)

  Specified by:
    `getMetaData` in interface `Constraint`

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