/** * Applies a mapping to a field collation. * * <p>If the field is not mapped, returns null. * * @param mapping Mapping * @param fieldCollation Field collation * @return collation with mapping applied */ public static RelFieldCollation apply( Mappings.TargetMapping mapping, RelFieldCollation fieldCollation) { final int target = mapping.getTargetOpt(fieldCollation.getFieldIndex()); if (target < 0) { return null; } return fieldCollation.copy(target); }
/** * Applies a mapping to a field collation. * * <p>If the field is not mapped, returns null. * * @param mapping Mapping * @param fieldCollation Field collation * @return collation with mapping applied */ public static RelFieldCollation apply( Mappings.TargetMapping mapping, RelFieldCollation fieldCollation) { final int target = mapping.getTargetOpt(fieldCollation.getFieldIndex()); if (target < 0) { return null; } return fieldCollation.copy(target); }
fieldCollation.copy(target));
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