Package org.apache.qpid.server.query.engine.parsing.expression.function.string

Class ReplaceExpression<T,​R>

  • Type Parameters:
    T - Input parameter type
    R - Return parameter type
    All Implemented Interfaces:
    Function<T,​String>, Expression<T,​String>, ExpressionNode<T,​String>
    public class ReplaceExpression<T,​R>
extends AbstractFunctionExpression<T,​String>
    REPLACE takes a source parameter, a pattern parameter and a replacement parameter. Replaces all occurrences of pattern in source string with the replacement strings. If source string is NULL, returns NULL.

    • Constructor Detail

      • ReplaceExpression

        public ReplaceExpression​(String alias,
                         List<ExpressionNode<T,​?>> args)
        Constructor initializes children expression list
        Parameters:
        alias - Expression alias
        args - List of children expressions

    • Method Detail

      • apply

        public String apply​(T value)
        Performs replace operation using parameters and the value supplied
        Parameters:
        value - Object to handle
        Returns:
        Resulting string