public class OwNullPredicate extends OwPredicate
SQL AST node : <null predicatet> syntax non-terminal as defined by the SQL grammar.
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Modifier and Type | Field and Description |
---|---|
static String |
IS_NOT_NULL |
static String |
IS_NULL |
Constructor and Description |
---|
OwNullPredicate(OwColumnReference columnReference_p,
boolean negated_p)
Constructor
|
Modifier and Type | Method and Description |
---|---|
StringBuilder |
createPredicateSQLString() |
List<OwColumnQualifier> |
getColumnQualifiers() |
boolean |
isValid() |
createBooleanTestSQLString, isXCondition
asBooleanTest, createBooleanFactorSQLString
createBooleanTermSQLString
createSearchConditionSQLString
public static final String IS_NULL
public static final String IS_NOT_NULL
public OwNullPredicate(OwColumnReference columnReference_p, boolean negated_p)
columnReference_p
- the column reference operand, must not be nullpublic StringBuilder createPredicateSQLString()
createPredicateSQLString
in class OwPredicate
StringBuilder
filled with the string representation of this non-terminalpublic boolean isValid()
true
public List<OwColumnQualifier> getColumnQualifiers()
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