gudusoft.gsqlparser.dlineage.dynamicsql

Class SqlValue

Object

gudusoft.gsqlparser.dlineage.dynamicsql.SqlValue

public final class SqlValue
extends Object

A concrete parameter binding value supplied by the caller of DataFlowAnalyzer.resolveDynamicSqlLineage.

This is the input side of dynamic-SQL resolution: the caller knows the value a parameter actually had at a call site (e.g. @SourceDB='QSP') and passes it in. It is intentionally simple — a string, a number, or SQL NULL. The evaluator widens these into the internal SqlStringValue lattice (which also models partial and unknown states that a caller can never supply).

NULL is represented explicitly (not as a Java null binding) so the evaluator can honor T-SQL NULL-propagation semantics (VARCHAR + NULL -> NULL). A Java null key/value in the bindings map is treated as "no binding for this parameter".

Method Summary

Modifier and Type	Method and Description
Double	asNumber() The numeric value, or null when this is not a number binding.
String	asText() The string form of the value (null only when isNull()).
boolean	isNull()
boolean	isNumber()
static SqlValue	nullValue() An explicit SQL NULL binding.
static SqlValue	of(boolean value) A boolean binding, mapped to T-SQL BIT semantics (1/0).
static SqlValue	of(double value) A floating-point binding.
static SqlValue	of(long value) An integer binding, e.g.
static SqlValue	of(String value) A string binding, e.g.
String	toString()

Methods inherited from class Object

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

Method Detail

of

public static SqlValue of(String value)

A string binding, e.g. @SourceDB = 'QSP'.

of

public static SqlValue of(long value)

An integer binding, e.g. @Debug = 0. Used for decidable IF and concatenation.

of

public static SqlValue of(double value)

A floating-point binding.

of

public static SqlValue of(boolean value)

A boolean binding, mapped to T-SQL BIT semantics (1/0).

nullValue

public static SqlValue nullValue()

An explicit SQL NULL binding.

isNull

public boolean isNull()

isNumber

public boolean isNumber()

asText

public String asText()

The string form of the value (null only when isNull()).

asNumber

public Double asNumber()

The numeric value, or null when this is not a number binding.

toString

public String toString()

Overrides:

toString in class Object