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Diffstat (limited to 'hicn-light/src/processor/matchingRulesTable.h')
-rwxr-xr-x | hicn-light/src/processor/matchingRulesTable.h | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/hicn-light/src/processor/matchingRulesTable.h b/hicn-light/src/processor/matchingRulesTable.h new file mode 100755 index 000000000..96d099430 --- /dev/null +++ b/hicn-light/src/processor/matchingRulesTable.h @@ -0,0 +1,113 @@ +/* + * Copyright (c) 2017-2019 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +/** + * @header matchingRulesTable + * @abstract A generic table (void *) that matches a Message + * @discussion + * Matching is done based on Name + * + * When used in the PIT, one calls + * <code>matchingRulesTable_AddToBestTable()</code> to add an interest to the + * "best" (i.e. most restrictive match) table, then calls + * <code>matchingRulesTable_GetUnion()</code> on a content object to match + * against all of them. + * + * When used in a ContentStore, one calls + * <code>matchingRulesTable_AddToAllTables()</code> to index a Content Object in + * all the tables. one then calls <code>matchingRulesTable_Get()</code> with an + * Interest to do the "best" matching (i.e by hash first, then keyid, then just + * by name). + * + */ + +#ifndef matchingRulesTable_h +#define matchingRulesTable_h + +#include <parc/algol/parc_ArrayList.h> +#include <parc/algol/parc_HashCodeTable.h> +#include <src/core/message.h> + +struct matching_rules_table; +typedef struct matching_rules_table MatchingRulesTable; + +/** + * Creates a MatchigRulesTable and specifies the function to call to de-allocate + * an entry + * + * The datadestroyer will be called when an entry is removed from a table. It + * may be NULL. + */ +MatchingRulesTable *matchingRulesTable_Create( + PARCHashCodeTable_Destroyer dataDestroyer); + +/** + * Destroys the table and removes all stored elements. + * + */ +void matchingRulesTable_Destroy(MatchingRulesTable **tablePtr); + +/** + * @function matchingRulesTable_Get + * @abstract Returns the data item that best matches the message. + * @discussion + * Indexed by NameAndContentObjectHash, NameAndKeyId, and Name, in that order. + * + * @return NULL if nothing matches, otherwise the stored value + */ +void *matchingRulesTable_Get(const MatchingRulesTable *table, + const Message *message); + +/** + * @function matchingRulesTable_GetUnion + * @abstract Returns matching data items from all index tables. + * @discussion + * The PARCArrayList does not have an item destructor, so destroying it will + * not affect the underlying data. + * + * @return Will not be NULL, but may be empty + */ +PARCArrayList *matchingRulesTable_GetUnion(const MatchingRulesTable *table, + const Message *message); + +/** + * @function matchingRulesTable_Add + * @abstract Adds the data to the best table + * @discussion + * The key must be derived from the data and destroyed when the data is + * destroyed. Only the data destroyer is called. + * + * No duplicates are allowed, will return false if not added. + * + * @return true if unique key and added, false if duplicate and no action taken. + */ +bool matchingRulesTable_AddToBestTable(MatchingRulesTable *rulesTable, + Message *key, void *data); + +/** + * @function matchingRulesTable_Remove + * @abstract Removes the matching entry from the best match table, calling the + * destroyer on the data. + */ +void matchingRulesTable_RemoveFromBest(MatchingRulesTable *rulesTable, + const Message *message); + +/** + * @function matchingRulesTable_RemoveFromAll + * @abstract Removes the message from all tables + */ +void matchingRulesTable_RemoveFromAll(MatchingRulesTable *rulesTable, + const Message *message); +#endif // matchingRulesTable_h |