OSX/libsecurity_filedb/lib/SelectionPredicate.cpp

   1 /*
   2  * Copyright (c) 2000-2001,2011,2014 Apple Inc. All Rights Reserved.
   3  *
   4  * The contents of this file constitute Original Code as defined in and are
   5  * subject to the Apple Public Source License Version 1.2 (the 'License').
   6  * You may not use this file except in compliance with the License. Please obtain
   7  * a copy of the License at http://www.apple.com/publicsource and read it before
   8  * using this file.
   9  *
  10  * This Original Code and all software distributed under the License are
  11  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
  12  * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
  13  * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
  14  * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
  15  * specific language governing rights and limitations under the License.
  16  */
  17
  18
  19 //
  20 // SelectionPredicate.cpp
  21 //
  22
  23 #include "SelectionPredicate.h"
  24
  25 SelectionPredicate::SelectionPredicate(const MetaRecord &inMetaRecord,
  26                                                                            const CSSM_SELECTION_PREDICATE &inPredicate)
  27 :       mMetaAttribute(inMetaRecord.metaAttribute(inPredicate.Attribute.Info)),
  28         mDbOperator(inPredicate.DbOperator)
  29 {
  30         // Make sure that the caller specified the attribute values in the correct format.
  31         if (inPredicate.Attribute.Info.AttributeFormat != mMetaAttribute.attributeFormat())
  32                 CssmError::throwMe(CSSMERR_DL_INCOMPATIBLE_FIELD_FORMAT);
  33
  34         // XXX See ISSUES
  35         if (inPredicate.Attribute.NumberOfValues != 1)
  36                 CssmError::throwMe(CSSMERR_DL_UNSUPPORTED_QUERY);
  37
  38         mData = inPredicate.Attribute.Value[0];
  39         mValue = mMetaAttribute.createValue(mData);
  40 }
  41
  42 SelectionPredicate::~SelectionPredicate()
  43 {
  44         delete mValue;
  45 }
  46
  47 bool
  48 SelectionPredicate::evaluate(const ReadSection &rs) const
  49 {
  50     return mMetaAttribute.evaluate(mValue, rs, mDbOperator);
  51 }