gudusoft.gsqlparser.pp2.layout.rules

Class AlignmentRules

Object

gudusoft.gsqlparser.pp2.layout.rules.AlignmentRules

All Implemented Interfaces:

LayoutRule

public final class AlignmentRules
extends Object
implements LayoutRule

When GFmtOpt.alignAliasInSelectList is set (and the list is stacked, TAlignStyle.AsStacked), aligns each stacked SELECT-list continuation column under the first column (i.e. just past the SELECT keyword) rather than at a flat indent:

 SELECT a,
        b,
        c
 

The alignment column is indentOf(SELECT) + len(SELECT) + 1. This overrides IndentRules' flat indent for those columns (priority LayoutPriorities.ALIGNMENT > LayoutPriorities.INDENT).

Only SELECT-list continuation columns that begin a line are aligned (the first column stays on the SELECT line). Needs S20 sql + S21 clause analyses. Iterative; read-only over tokens.

Plan reference: §7.3/S28, §7.4/S28.

Constructor Summary

Constructors

Constructor and Description
AlignmentRules()

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

AlignmentRules

public AlignmentRules()

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