gudusoft.gsqlparser.pp2.layout.rules

Class JoinRules

Object

gudusoft.gsqlparser.pp2.layout.rules.JoinRules

All Implemented Interfaces:

LayoutRule

public final class JoinRules
extends Object
implements LayoutRule

Lays out joins vertically: a linebreak before the start of each join phrase (JOIN, LEFT OUTER JOIN, INNER JOIN, CROSS APPLY, ...) and before each ON / USING that opens a join condition.

Robust join detection

• A break before a join phrase fires only when the maximal forward run of join keywords actually contains the operator JOIN or APPLY. This stops a LEFT( string function inside an ON predicate (... ON left(x,1) = y) from being mistaken for a LEFT JOIN.
• ON/USING break only at the join operator's own block (paren) depth, so a structural-looking keyword inside a function call (e.g. JSON ... NULL ON ERROR ...) does not trigger a break.

Gated to tokens whose S21 ClausePart is ClausePart.JOIN. Priority LayoutPriorities.JOIN_PAREN_COMMA. Needs the S21 clause and S19 block analyses on the context. Iterative; read-only.

Plan reference: §7.3/S26, §7.4/S26.

Constructor Summary

Constructors

Constructor and Description
JoinRules()

Method Summary

Modifier and Type	Method and Description
void	apply(LayoutContext context) Apply the rule, requesting layout decisions on the context.
String	name() Short, stable identifier for logging/diagnostics.
int	priority() The rule's precedence.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

JoinRules

public JoinRules()

Method Detail

priority

public int priority()

Description copied from interface: LayoutRule

The rule's precedence. Higher-priority rules win conflicts over lower-priority ones regardless of registration order.

Specified by:

priority in interface LayoutRule

name

public String name()

Description copied from interface: LayoutRule

Short, stable identifier for logging/diagnostics.

Specified by:

name in interface LayoutRule

apply

public void apply(LayoutContext context)

Description copied from interface: LayoutRule

Apply the rule, requesting layout decisions on the context.

Specified by:

apply in interface LayoutRule