39 lines
1.1 KiB
C
39 lines
1.1 KiB
C
/*
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* Copyright 2014 (c) Anna Schumaker.
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*
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* The struct index_entry is used to associate a database key
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* with a set of integers, creating an inverted index.
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*/
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#ifndef OCARINA_CORE_CONTAINERS_INDEX_H
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#define OCARINA_CORE_CONTAINERS_INDEX_H
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#include <core/containers/database.h>
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#include <core/containers/set.h>
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struct index_entry {
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gchar *ie_key;
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struct set ie_set;
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struct db_entry ie_dbe;
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};
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#define INDEX_ENTRY(dbe) ((struct index_entry *)DBE_DATA(dbe))
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/* Initialize a database for use as an index. */
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void index_init(struct database *, const gchar *, bool);
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/* Add a value to an index item with the specified key. */
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struct index_entry *index_insert(struct database *, const gchar *, unsigned int);
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/* Remove a value from an index item with the specified key. */
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void index_remove(struct database *, const gchar *, unsigned int);
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/* Called to check if the index has the specified (key, value) pair. */
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bool index_has(struct database *, const gchar *, unsigned int);
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#ifdef CONFIG_TESTING
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const struct db_ops *test_index_ops();
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#endif /* CONFIG_TESTING */
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#endif /* OCARINA_CORE_CONTAINERS_INDEX_H */
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