SqlMetaIfItem (SQL Processor, Core Module 3.5.0 API)

java.lang.Object
- org.sqlproc.engine.impl.SqlMetaIfItem

All Implemented Interfaces:: SqlMetaElement

class SqlMetaIfItem
extends Object
implements SqlMetaElement

A META SQL sub-element.

Schematically:

 SqlMetaIfItem
     SqlMetaText
     SqlMetaIdent
     SqlMetaConst
     SqlMetaAndOr for embedded {}, {&}, {|}
     SqlMetaIf for embedded {? }

Author:: Vladimir Hudec

Field Summary

Fields
Modifier and Type	Field	Description
`(package private) List<SqlMetaElement>`	`elements`	The list of sub-elements based on ANTLR grammar.
`(package private) org.slf4j.Logger`	`logger`	The internal slf4j logger.

Fields inherited from interface org.sqlproc.engine.impl.SqlMetaElement
AND_PREFIX, CONST_PREFIX, IDENT_PREFIX, IDENT_SEPARATOR, lCONST_PREFIX, lIDENT_PREFIX, OR_PREFIX, SET_PREFIX, VALUES_PREFIX, WHERE_PREFIX

Constructor Summary

Constructors
Constructor Description

SqlMetaIfItem()
Creates a new instance.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`(package private) void`	`addElement(SqlMetaElement element)`	Adds a new sub-element.
`SqlProcessResult`	`process(SqlProcessContext ctx)`	The main contract for a dynamic ANSI SQL Query generation.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - logger
```
final org.slf4j.Logger logger
```
    The internal slf4j logger.
  - elements
```
List<SqlMetaElement> elements
```
    The list of sub-elements based on ANTLR grammar.
- Constructor Detail
  - SqlMetaIfItem
```
SqlMetaIfItem()
```
    Creates a new instance. It's used from inside ANTLR parser.
- Method Detail
  - addElement
```
void addElement(SqlMetaElement element)
```
    Adds a new sub-element. It's used from inside ANTLR parser.
    
    Parameters:
    
    element - new sub-element, based on ANTLR grammar
  - process
```
public SqlProcessResult process(SqlProcessContext ctx)
```
    The main contract for a dynamic ANSI SQL Query generation. Also known as a META SQL processing. The composite pattern main contract. All ANTLR grammar based elements must implement this contract.
    
    Specified by:
    
    process in interface SqlMetaElement
    
    Parameters:
    
    ctx - the crate for all input parameters and the context of processing