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HHH-19974 Refactor InformixDialect to override getSelectClauseNullString #11460

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HHH-19974 Refactor InformixDialect to override getSelectClauseNullString #11460

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13 changes: 13 additions & 0 deletions ...ate-community-dialects/src/main/java/org/hibernate/community/dialect/InformixDialect.java
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Original file line number Diff line number Diff line change
Expand Up @@ -40,6 +40,8 @@
import org.hibernate.exception.LockAcquisitionException;
import org.hibernate.exception.spi.SQLExceptionConversionDelegate;
import org.hibernate.mapping.CheckConstraint;
import org.hibernate.metamodel.mapping.SqlExpressible;
import org.hibernate.metamodel.mapping.SqlTypedMapping;
import org.hibernate.query.sqm.CastType;
import org.hibernate.query.sqm.IntervalType;
import org.hibernate.query.sqm.function.SqmFunctionRegistry;
Expand Down Expand Up @@ -1097,6 +1099,17 @@ public String getSelectClauseNullString(int sqlType, TypeConfiguration typeConfi
return "cast(null as " + castType + ")";
}

// Add override for the newer signature to access columnDefinition
@Override
public String getSelectClauseNullString(SqlTypedMapping sqlType, TypeConfiguration typeConfiguration) {
final DdlTypeRegistry ddlTypeRegistry = typeConfiguration.getDdlTypeRegistry();
final String castTypeName = ddlTypeRegistry
.getDescriptor( sqlType.getJdbcMapping().getJdbcType().getDdlTypeCode() )
.getCastTypeName( sqlType.toSize(), (SqlExpressible) sqlType.getJdbcMapping(), ddlTypeRegistry );
return "cast(null as " + castTypeName + ")";
}


private static String castType(DdlType descriptor) {
final String typeName = descriptor.getTypeName( Size.length( Size.DEFAULT_LENGTH ) );
//trim off the length/precision/scale
Expand Down