Package com.tonic.analysis.query.ast

Interface Condition

All Known Implementing Classes:

Condition.And, Condition.Comparison, Condition.Count, Condition.Group, Condition.Not, Condition.Or, Condition.Quantifier, Condition.Sequence, Condition.True

public interface Condition

The boolean expression tree of a query's WHERE clause - the only place booleans live.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	Condition.And
static class	Condition.Comparison	accessor OP operand - the single generic leaf.
static class	Condition.Count	count(<stream> [where (body)]) OP n - cardinality of a (optionally filtered) stream.
static class	Condition.Group
static class	Condition.Not
static class	Condition.Or
static class	Condition.Quant	Existence/universality of a sub-condition over a sub-subject stream.
static class	Condition.Quantifier	has|any|all|none <stream> where (body).
static class	Condition.Sequence	SEQUENCE [ e1, e2, .. ] - an ordered, unanchored regex over the method's instruction stream.
static class	Condition.True	Constant truth, used as an identity element when simplifying/splitting trees.
static interface	Condition.Visitor<R>

Method Summary

Modifier and Type	Method	Description
<R> R	accept(Condition.Visitor<R> visitor)	Dispatches to the visitor method for this node's variant.
static String	join(List<Condition> terms, String sep)	Renders conditions in order, separated by the given text.

Method Detail

accept

<R> R accept(Condition.Visitor<R> visitor)

Dispatches to the visitor method for this node's variant.

Type Parameters:

R - the visitor's result type

Parameters:

visitor - the visitor to dispatch to

Returns:

whatever the visitor returns

join

static String join(List<Condition> terms,
                   String sep)

Renders conditions in order, separated by the given text.

Parameters:

terms - the conditions to render

sep - the text placed between consecutive terms

Returns:

the rendered text