com.codestreet.selector.parser
Interface IExpression

All Known Subinterfaces:

IExpressionBool, IExpressionNumeric, IExpressionString

All Known Implementing Classes:

Identifier

public interface IExpression

Interface implemented by expression implementations.

Author:

Jawaid Hakim.

Method Summary

java.lang.Object	eval(IValueProvider provider, java.lang.Object corr) Evaluate the expression.
java.lang.Object	eval(java.util.Map identifiers) Evaluate the expression.

Method Detail

eval

public java.lang.Object eval(java.util.Map identifiers)

Evaluate the expression.

Parameters:

identifiers - Identifier values.

Returns:

Result of the expression evaluation.

eval

public java.lang.Object eval(IValueProvider provider,
                             java.lang.Object corr)

Evaluate the expression.

Parameters:

provider - Value provider. During evaluation of the expression callbacks are made on the value provider to get identifier values.

corr - Correlation data. Passed as-is to the value provider.

Returns:

Result evaluating the expression.