org.plasma.query
Interface Expression

All Superinterfaces:

Term

All Known Implementing Classes:

Expression

public interface Expression
extends Term

A base expression

Method Summary

Expression	and(Expression expr) Concatenates the given expression onto this expression using a logical 'and' operator.
Expression	group() Places this expression within grouping operators and returns the grouped expression.
Expression	or(Expression expr) Concatenates the given expression onto this expression using a logical 'or' operator.

Method Detail

and

Expression and(Expression expr)

Concatenates the given expression onto this expression using a logical 'and' operator.

Parameters:

expr - the expression

Returns:

the original expression

or

Expression or(Expression expr)

Concatenates the given expression onto this expression using a logical 'or' operator.

Parameters:

expr - the expression

Returns:

the original expression

group

Expression group()

Places this expression within grouping operators and returns the grouped expression.

Returns:

the grouped expression