Package org.sqlproc.engine.impl

Class SqlMetaText

java.lang.Object

org.sqlproc.engine.impl.SqlMetaText

All Implemented Interfaces:

SqlMetaElement, SqlMetaSimple

class SqlMetaText
extends Object
implements SqlMetaSimple

A META SQL sub-element. It represents a text without any semantic value for a META SQL generation.

Author:

Vladimir Hudec

Field Summary

Fields

Modifier and Type	Field	Description
(package private) final org.slf4j.Logger	logger	The internal slf4j logger.
private String	sql	An ANSI SQL fragment from META SQL.

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
SqlMetaText(String sql)	Creates a new instance.

Method Summary

Modifier and Type	Method	Description
boolean	isWhite()	Returns an indicator that the text fragment is empty.
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 Details

logger

final org.slf4j.Logger logger

The internal slf4j logger.

sql

private String sql

An ANSI SQL fragment from META SQL.

Constructor Details

SqlMetaText

SqlMetaText(String sql)

Creates a new instance. It's used from inside ANTLR parser.

Parameters:

sql - the ANSI SQL fragment from META SQL

Method Details

isWhite

public boolean isWhite()

Returns an indicator that the text fragment is empty.

Returns:

an indicator that the text fragment is empty

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