Package org.geotools.data.wfs.internal.v2_0.storedquery

Class ParameterCQLExpressionPropertyName

Object
ParameterCQLExpressionPropertyName
All Implemented Interfaces:
Expression, PropertyName
public abstract class ParameterCQLExpressionPropertyName extends Object implements PropertyName

  • Constructor Details

    • ParameterCQLExpressionPropertyName

      public ParameterCQLExpressionPropertyName(String name)

  • Method Details

    • evaluate

      public Object evaluate(Object object)
      Description copied from interface: Expression
      Evaluates the given expression based on the content of the given object.
      Specified by:
      evaluate in interface Expression
      Returns:
      computed value

    • get

      protected abstract Object get(ParameterMappingContext context)

    • evaluate

      public <T> T evaluate(Object object, Class<T> context)
      Description copied from interface: Expression
      Evaluates the given expressoin based on the content of the given object and the context type.

      The context parameter is used to control the type of the result of the expression. A particular expression may not be able to evaluate to an instance of context. Therefore to be safe calling code should do a null check on the return value of this method, and call Expression.evaluate(Object) if neccessary. Example: 

        Object input = ...;
  String result = expression.evaluate( input, String.class );
  if ( result == null ) {
     result = expression.evalute( input ).toString();
  }
  ...

      Implementations that can not return a result as an instance of context should return null.

      Specified by:
      evaluate in interface Expression
      Type Parameters:
      T - The type of the returned object.
      Parameters:
      object - The object to evaluate the expression against.
      context - The type of the resulting value of the expression.
      Returns:
      Evaluates the given expression based on the content of the given object an an instance of context.

    • accept

      public Object accept(ExpressionVisitor visitor, Object extraData)
      Description copied from interface: Expression
      Accepts a visitor. Subclasses must implement with a method whose content is the following: 
      return visitor.visit(this, extraData);
      Specified by:
      accept in interface Expression

    • getPropertyName

      public String getPropertyName()
      Description copied from interface: PropertyName
      Returns the name of the property whose value will be returned by the evaluate method.
      Specified by:
      getPropertyName in interface PropertyName

    • getNamespaceContext

      public NamespaceSupport getNamespaceContext()
      Description copied from interface: PropertyName
      Returns namespace context information, or null if unavailable/inapplicable
      Specified by:
      getNamespaceContext in interface PropertyName
      Returns:
      namespace context information, or null if unavailable/inapplicable