In the C IDL, allows to create multicolumn indexes in the
tables, that are keep synched with the data in the replica.
Signed-off-by: Esteban Rodriguez Betancourt <esteb...@hpe.com>
---
lib/ovsdb-idl-provider.h | 29 +++
lib/ovsdb-idl.c | 491 ++++++++++++++++++++++++++++++++++++++++++++++-
lib/ovsdb-idl.h | 59 ++++++
3 files changed, 578 insertions(+), 1 deletion(-)
diff --git a/lib/ovsdb-idl-provider.h b/lib/ovsdb-idl-provider.h
index 027f79b..4653028 100644
--- a/lib/ovsdb-idl-provider.h
+++ b/lib/ovsdb-idl-provider.h
@@ -1,4 +1,5 @@
/* Copyright (c) 2009, 2010, 2011, 2012 Nicira, Inc.
+ * Copyright (C) 2016 Hewlett Packard Enterprise Development LP
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -69,6 +70,7 @@ struct ovsdb_idl_table {
struct hmap rows; /* Contains "struct ovsdb_idl_row"s. */
struct ovsdb_idl *idl; /* Containing idl. */
unsigned int change_seqno[OVSDB_IDL_CHANGE_MAX];
+ struct shash indexes; /* Contains "struct ovsdb_idl_index"s */
struct ovs_list track_list; /* Tracked rows (ovsdb_idl_row.track_node). */
};
@@ -78,6 +80,33 @@ struct ovsdb_idl_class {
size_t n_tables;
};
+/*
+ * Contains the configuration per column of the index
+ */
+struct ovsdb_idl_index_column {
+ const struct ovsdb_idl_column *column;
+ column_comparator *comparer;
+ int sorting_order;
+};
+
+/*
+ * Defines a IDL compound index
+ */
+struct ovsdb_idl_index {
+ struct skiplist *skiplist; /* Skiplist with pointer to
+ * rows*/
+ struct ovsdb_idl_index_column *columns; /* Columns configuration */
+ size_t n_columns; /* Number of columns in index
*/
+ size_t alloc_columns; /* Size allocated memory for
+ * columns, comparers and
+ * sorting order */
+ bool row_sync; /* Determines if the replica
+ * is modifying its content or
+ * not */
+ const struct ovsdb_idl_table *table; /* Table that owns this index
*/
+ const char* index_name; /* The name of this index */
+};
+
struct ovsdb_idl_row *ovsdb_idl_get_row_arc(
struct ovsdb_idl_row *src,
struct ovsdb_idl_table_class *dst_table,
diff --git a/lib/ovsdb-idl.c b/lib/ovsdb-idl.c
index 3ab05a3..814be11 100644
--- a/lib/ovsdb-idl.c
+++ b/lib/ovsdb-idl.c
@@ -1,4 +1,5 @@
/* Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 Nicira, Inc.
+ * Copyright (C) 2016 Hewlett Packard Enterprise Development LP
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -36,8 +37,10 @@
#include "ovsdb-parser.h"
#include "poll-loop.h"
#include "shash.h"
+#include "skiplist.h"
#include "sset.h"
#include "util.h"
+#include "uuid.h"
#include "openvswitch/vlog.h"
VLOG_DEFINE_THIS_MODULE(ovsdb_idl);
@@ -204,6 +207,16 @@ ovsdb_idl_table_from_class(const struct ovsdb_idl *,
const struct ovsdb_idl_table_class *);
static bool ovsdb_idl_track_is_set(struct ovsdb_idl_table *table);
+static int
+ovsdb_idl_index_generic_comparer(const void *, const void *, const void *);
+static struct ovsdb_idl_index *ovsdb_idl_create_index_(const struct
+ ovsdb_idl_table *table,
+ size_t allocated_cols);
+static void
+ ovsdb_idl_destroy_indexes(struct ovsdb_idl_table *table);
+static void ovsdb_idl_add_to_indexes(const struct ovsdb_idl_row *);
+static void ovsdb_idl_remove_from_indexes(const struct ovsdb_idl_row *);
+
/* Creates and returns a connection to database 'remote', which should be in a
* form acceptable to jsonrpc_session_open(). The connection will maintain an
* in-memory replica of the remote database whose schema is described by
@@ -250,6 +263,7 @@ ovsdb_idl_create(const char *remote, const struct
ovsdb_idl_class *class,
memset(table->modes, default_mode, tc->n_columns);
table->need_table = false;
shash_init(&table->columns);
+ shash_init(&table->indexes);
for (j = 0; j < tc->n_columns; j++) {
const struct ovsdb_idl_column *column = &tc->columns[j];
@@ -285,6 +299,8 @@ ovsdb_idl_destroy(struct ovsdb_idl *idl)
for (i = 0; i < idl->class->n_tables; i++) {
struct ovsdb_idl_table *table = &idl->tables[i];
+
+ ovsdb_idl_destroy_indexes(table);
shash_destroy(&table->columns);
hmap_destroy(&table->rows);
free(table->modes);
@@ -319,6 +335,7 @@ ovsdb_idl_clear(struct ovsdb_idl *idl)
struct ovsdb_idl_arc *arc, *next_arc;
if (!ovsdb_idl_row_is_orphan(row)) {
+ ovsdb_idl_remove_from_indexes(row);
ovsdb_idl_row_unparse(row);
}
LIST_FOR_EACH_SAFE (arc, next_arc, src_node, &row->src_arcs) {
@@ -1477,10 +1494,477 @@ ovsdb_idl_row_unparse(struct ovsdb_idl_row *row)
for (i = 0; i < class->n_columns; i++) {
const struct ovsdb_idl_column *c = &class->columns[i];
- (c->unparse)(row);
+
+ (c->unparse) (row);
+ }
+}
+
+/*
+ * The OVSDB-IDL Compound Indexes feature allows to create custom
+ * indexes over several columns in the IDL.
+ * With those index, the developer can retrieve rows matching a search
+ * criteria, or show the rows sorted in a specific way.
+ */
+
+/*
+ * Creates a new index, that is attached to the given idl and table.
+ * The index has the given name.
+ * All the indexes must be created before the first ovsdb_idl_run is
+ * executed.
+ */
+struct ovsdb_idl_index *
+ovsdb_idl_create_index(struct ovsdb_idl *idl,
+ const struct ovsdb_idl_table_class *tc,
+ const char *index_name)
+{
+ size_t i;
+ struct ovsdb_idl_index *index;
+
+ for (i = 0; i < idl->class->n_tables; i++) {
+ struct ovsdb_idl_table *table = &idl->tables[i];
+
+ if (table->class == tc) {
+ index = ovsdb_idl_create_index_(table, 1);
+ if (!shash_add_once(&table->indexes, index_name, index)) {
+ VLOG_ERR("Can't repeat index name '%s' at table %s",
+ index_name, table->class->name);
+ return NULL;
+ }
+ index->index_name = index_name;
+ return index;
+ }
+ }
+ OVS_NOT_REACHED();
+ return NULL;
+}
+
+static struct ovsdb_idl_index *
+ovsdb_idl_create_index_(const struct ovsdb_idl_table *table,
+ size_t allocated_cols)
+{
+ struct ovsdb_idl_index *index;
+
+ index = xmalloc(sizeof (struct ovsdb_idl_index));
+ index->n_columns = 0;
+ index->alloc_columns = allocated_cols;
+ index->skiplist = skiplist_create(64, ovsdb_idl_index_generic_comparer,
+ index);
+ index->columns = xmalloc(allocated_cols *
+ sizeof (struct ovsdb_idl_index_column));
+ index->row_sync = false;
+ index->table = table;
+ return index;
+}
+
+static void
+ovsdb_idl_destroy_indexes(struct ovsdb_idl_table *table)
+{
+ struct shash_node *node;
+ struct ovsdb_idl_index *index;
+
+ SHASH_FOR_EACH(node, &(table->indexes)) {
+ index = (struct ovsdb_idl_index *) node->data;
+ skiplist_destroy(index->skiplist);
+ free(index->columns);
+ }
+}
+
+static void
+ovsdb_idl_add_to_indexes(const struct ovsdb_idl_row *row)
+{
+ struct ovsdb_idl_table *table = row->table;
+ struct ovsdb_idl_index *index;
+ struct shash_node *node;
+
+ SHASH_FOR_EACH(node, &(table->indexes)) {
+ index = (struct ovsdb_idl_index *) node->data;
+ index->row_sync = true;
+ skiplist_insert(index->skiplist, row);
+ index->row_sync = false;
+ }
+}
+
+static void
+ovsdb_idl_remove_from_indexes(const struct ovsdb_idl_row *row)
+{
+ struct ovsdb_idl_table *table = row->table;
+ struct ovsdb_idl_index *index;
+ struct shash_node *node;
+
+ SHASH_FOR_EACH(node, &(table->indexes)) {
+ index = (struct ovsdb_idl_index *) node->data;
+ index->row_sync = true;
+ skiplist_delete(index->skiplist, row);
+ index->row_sync = false;
}
}
+/*
+ * Generic string comparer
+ */
+int
+ovsdb_idl_index_strcmp(char *data1, char *data2)
+{
+ return strcmp(data1, data2);
+}
+
+/*
+ * Generic int64_t comparer
+ */
+int
+ovsdb_idl_index_intcmp(int64_t a, int64_t b)
+{
+ return (a > b) - (a < b);
+}
+
+/*
+ * Generic float comparer
+ */
+int
+ovsdb_idl_index_doublecmp(double a, double b)
+{
+ return (a > b) - (a < b);
+}
+
+/*
+ * Adds a column to an existing index (all columns must be inserted before
+ * the first ovsdb_idl_run is executed).
+ * In "order", accepts the values OVSDB_INDEX_ASC or OVSDB_INDEX_DESC
+ * (OVSDB_INDEX_ASC by default).
+ * In "custom_comparer" it accepts a custom comparison function. If given NULL
+ * it will use the default comparator for the column (only available for
+ * string, numeric or real columns).
+ */
+void
+ovsdb_idl_index_add_column(struct ovsdb_idl_index *index,
+ const struct ovsdb_idl_column *column,
+ int order, column_comparator * custom_comparer)
+{
+ /* Check that the column or table is tracked */
+ if (!index->table->need_table &&
+ !((OVSDB_IDL_MONITOR | OVSDB_IDL_ALERT) &
+ *ovsdb_idl_get_mode(index->table->idl, column))) {
+ VLOG_ERR("Can't add column '%s' at index '%s' in "
+ "table '%s'. Column isn't monitored.",
+ column->name, index->index_name, index->table->class->name);
+ }
+ if (!ovsdb_type_is_scalar(&column->type) && !custom_comparer) {
+ VLOG_WARN("Comparing non-scalar values.");
+ }
+
+ /* Allocate more memory for column configuration */
+ if (index->n_columns == index->alloc_columns) {
+ index->alloc_columns++;
+ index->columns = xrealloc(index->columns,
+ index->alloc_columns *
+ sizeof(struct ovsdb_idl_index_column));
+ }
+
+ /* Append column to index */
+ int i = index->n_columns;
+
+ index->columns[i].column = column;
+ index->columns[i].comparer = custom_comparer ? custom_comparer : NULL;
+ if (order == OVSDB_INDEX_ASC) {
+ index->columns[i].sorting_order = OVSDB_INDEX_ASC;
+ } else {
+ index->columns[i].sorting_order = OVSDB_INDEX_DESC;
+ }
+ index->n_columns++;
+}
+
+/*
+ * Initializes a index cursor
+ */
+bool
+ovsdb_idl_initialize_cursor(struct ovsdb_idl *idl,
+ const struct ovsdb_idl_table_class *tc,
+ const char *index_name,
+ struct ovsdb_idl_index_cursor *cursor)
+{
+ size_t i;
+
+ for (i = 0; i < idl->class->n_tables; i++) {
+ struct ovsdb_idl_table *table = &idl->tables[i];
+
+ if (table->class == tc) {
+ cursor->index =
+ (struct ovsdb_idl_index *) shash_find(&table->indexes,
+ index_name)->data;
+ if (!cursor->index) {
+ VLOG_ERR("Cursor initialization fails. "
+ "Index %s at table %s doesn't exist.",
+ index_name, tc->name);
+ cursor->index = NULL;
+ cursor->position = NULL;
+ return false;
+ }
+ cursor->position = skiplist_first(cursor->index->skiplist);
+ return true;
+ }
+ }
+ VLOG_ERR("Cursor initialization fails. "
+ "Index %s at table %s doesn't exist.", index_name, tc->name);
+ return false;
+}
+
+/*
+ * ovsdb_idl_index_write_ writes a datum in an ovsdb_idl_row,
+ * and updates the corresponding field in the table record.
+ * NOT INTENDED FOR DIRECT USAGE.
+ */
+void
+ovsdb_idl_index_write_(struct ovsdb_idl_row *const_row,
+ const struct ovsdb_idl_column *column,
+ struct ovsdb_datum *datum,
+ const struct ovsdb_idl_table_class *class)
+{
+ struct ovsdb_idl_row *row = CONST_CAST(struct ovsdb_idl_row *, const_row);
+ size_t column_idx = column - class->columns;
+
+ /* Extracted from ovsdb_idl_txn_write__ */
+ if (row->old == row->new) {
+ row->new = xmalloc(class->n_columns * sizeof *row->new);
+ }
+ if (!row->written) {
+ row->written = bitmap_allocate(class->n_columns);
+ }
+ if (bitmap_is_set(row->written, column_idx)) {
+ ovsdb_datum_destroy(&row->new[column_idx], &column->type);
+ } else {
+ bitmap_set1(row->written, column_idx);
+ }
+ row->new[column_idx] = *datum;
+ (column->unparse)(row);
+ (column->parse)(row, &row->new[column_idx]);
+}
+
+/*
+ * Initializes a row for usage with the compound indexes query.
+ * NOT intented for direct usage.
+ */
+struct ovsdb_idl_row *
+ovsdb_idl_index_init_row(struct ovsdb_idl * idl,
+ const struct ovsdb_idl_table_class *class)
+{
+ struct ovsdb_idl_row *row = xzalloc(class->allocation_size);
+ class->row_init(row);
+ row->written = bitmap_allocate(class->n_columns);
+ row->table = ovsdb_idl_table_from_class(idl, class);
+ return row;
+}
+
+/* NOT INTENTED FOR DIRECT USAGE.
+ * Destroys 'row_' and frees memory
+ * Usually this function is used indirectly through one of the
+ * "index_destroy_row" functions generated by ovsdb-idlc.
+ */
+void
+ovsdb_idl_index_destroy_row__(const struct ovsdb_idl_row *row_)
+{
+ struct ovsdb_idl_row *row = CONST_CAST(struct ovsdb_idl_row *, row_);
+ const struct ovsdb_idl_table_class *class = row->table->class;
+ size_t i;
+
+ if (row->new) {
+ const struct ovsdb_idl_column *c;
+ if (row->written) {
+ BITMAP_FOR_EACH_1 (i, class->n_columns, row->written) {
+ c = &class->columns[i];
+ (c->unparse) (row);
+ }
+ }
+ if (row->old) {
+ free(row->old);
+ }
+ free(row->new);
+ free(row->written);
+ free(row);
+ return;
+ }
+}
+
+/* Reads and returns the value of 'column' within 'row'. If the value
+ * was set with index_set functions then the modified value is returned.
+ *
+ * The caller must not modify or free the returned value.
+ *
+ */
+static const struct ovsdb_datum *
+ovsdb_idl_index_read(const struct ovsdb_idl_row *row,
+ const struct ovsdb_idl_column *column,
+ const struct ovsdb_idl_table_class *class)
+{
+ size_t column_idx;
+
+ column_idx = column - class->columns;
+
+ ovs_assert(row->new != NULL);
+ ovs_assert(column_idx < class->n_columns);
+
+ if (row->written && bitmap_is_set(row->written, column_idx)) {
+ return &row->new[column_idx];
+ } else if (row->old) {
+ return &row->old[column_idx];
+ } else {
+ return ovsdb_datum_default(&column->type);
+ }
+}
+
+/*
+ * Generic comparator that can compare each index, using the custom
+ * configuration (an struct ovsdb_idl_index) passed to it.
+ * Not intended for direct usage.
+ */
+static int
+ovsdb_idl_index_generic_comparer(const void *a,
+ const void *b, const void *conf)
+{
+ size_t i;
+ const struct ovsdb_idl_index *index;
+ index = CONST_CAST(struct ovsdb_idl_index *, conf);
+ const struct ovsdb_idl_column *column;
+
+ for (i = 0; i < index->n_columns; i++) {
+ int val;
+ if (index->columns[i].comparer) {
+ val = index->columns[i].comparer(a, b);
+ } else {
+ column = index->columns[i].column;
+ const struct ovsdb_idl_row *row_a, *row_b;
+ row_a = CONST_CAST(struct ovsdb_idl_row *, a);
+ row_b = CONST_CAST(struct ovsdb_idl_row *, b);
+ const struct ovsdb_datum *datum_a, *datum_b;
+ datum_a = ovsdb_idl_index_read(row_a, column, index->table->class);
+ datum_b = ovsdb_idl_index_read(row_b, column, index->table->class);
+ val = ovsdb_datum_compare_3way(datum_a, datum_b, &column->type);
+ }
+
+ if (val) {
+ return val * index->columns[i].sorting_order;
+ }
+ }
+
+ /*
+ * If row_sync is true then the IDL is synchronizing the replica's
+ * rows with the ones stored in the index. In this case is necessary
+ * to compare also by pointer value (eg: so the correct row is removed).
+ * In any other case (the user is doing a search) the values are
+ * already equal, so return 0.
+ * Also, the pointers obviously are random, so in different IDLs of the
+ * same OVSDB instance the index could have different ordering.
+ * Comparing first by UUID can guarantee the same order at any IDL.
+ */
+ if (index->row_sync) {
+ const struct ovsdb_idl_row *row_a, *row_b;
+
+ row_a = (const struct ovsdb_idl_row *) a;
+ row_b = (const struct ovsdb_idl_row *) b;
+ int value = uuid_compare_3way(&row_a->uuid, &row_b->uuid);
+
+ return value ? value : (a < b) - (a > b);
+ } else {
+ return 0;
+ }
+}
+
+/*
+ * Moves the cursor to the first entry in the index.
+ * Returns a pointer to the corresponding ovsdb_idl_row, or NULL.
+ */
+struct ovsdb_idl_row *
+ovsdb_idl_index_first(struct ovsdb_idl_index_cursor *cursor)
+{
+ cursor->position = skiplist_first(cursor->index->skiplist);
+ return ovsdb_idl_index_data(cursor);
+}
+
+/*
+ * Moves the cursor to the following record in the index.
+ */
+struct ovsdb_idl_row *
+ovsdb_idl_index_next(struct ovsdb_idl_index_cursor *cursor)
+{
+ if (!cursor->position) {
+ return NULL;
+ }
+ cursor->position = skiplist_next(cursor->position);
+ return ovsdb_idl_index_data(cursor);
+}
+
+/*
+ * Returns the ovsdb_idl_row pointer corresponding to the current record
+ */
+struct ovsdb_idl_row *
+ovsdb_idl_index_data(struct ovsdb_idl_index_cursor *cursor)
+{
+ return (struct ovsdb_idl_row *) skiplist_get_data(cursor->position);
+}
+
+/*
+ * Moves the cursor to the first entry with a value equal to the given value.
+ * If the value given is NULL then the function will behave like
+ * ovsdb_idl_index_first.
+ * Returns a pointer to the corresponding ovsdb_idl_row (that can be casted
+ * to a ovsrec) or NULL.
+ */
+struct ovsdb_idl_row *
+ovsdb_idl_index_find(struct ovsdb_idl_index_cursor *cursor,
+ struct ovsdb_idl_row *value)
+{
+ if (value) {
+ cursor->position = skiplist_find(cursor->index->skiplist, value);
+ } else {
+ cursor->position = skiplist_first(cursor->index->skiplist);
+ }
+ return ovsdb_idl_index_data(cursor);
+}
+
+/*
+ * Moves the cursor to the first entry with a value greater or equal
+ * to the given value.
+ * If the value given is NULL then the function will behave like
+ * ovsdb_idl_index_first.
+ * Returns a pointer to the corresponding ovsdb_idl_row (that can be casted
+ * to a ovsrec) or NULL.
+ */
+struct ovsdb_idl_row *
+ovsdb_idl_index_forward_to(struct ovsdb_idl_index_cursor *cursor,
+ struct ovsdb_idl_row *value)
+{
+ if (value) {
+ cursor->position = skiplist_forward_to(cursor->index->skiplist, value);
+ } else {
+ cursor->position = skiplist_first(cursor->index->skiplist);
+ }
+ return ovsdb_idl_index_data(cursor);
+}
+
+/*
+ * Returns the result of comparing two ovsrecs (casted to ovsdb_idl_row),
+ * using the comparer defined in the index.
+ * Returns:
+ * < 0 if a < b
+ * 0 if a == b
+ * > 0 if a > b
+ * When some input is NULL this function considers NULL to be greater than
+ * any other value, and NULL == NULL.
+ */
+int
+ovsdb_idl_index_compare(struct ovsdb_idl_index_cursor *cursor,
+ struct ovsdb_idl_row *a, struct ovsdb_idl_row *b)
+{
+ if (a && b) {
+ return ovsdb_idl_index_generic_comparer(a, b, cursor->index);
+ } else if (!a && !b) {
+ return 0;
+ } else if(a){
+ return -1;
+ } else {
+ return 1;
+ }
+}
+
static void
ovsdb_idl_row_clear_old(struct ovsdb_idl_row *row)
{
@@ -1641,11 +2125,14 @@ ovsdb_idl_insert_row(struct ovsdb_idl_row *row, const
struct json *row_json)
ovsdb_idl_row_parse(row);
ovsdb_idl_row_reparse_backrefs(row);
+
+ ovsdb_idl_add_to_indexes(row);
}
static void
ovsdb_idl_delete_row(struct ovsdb_idl_row *row)
{
+ ovsdb_idl_remove_from_indexes(row);
ovsdb_idl_row_unparse(row);
ovsdb_idl_row_clear_arcs(row, true);
ovsdb_idl_row_clear_old(row);
@@ -1663,10 +2150,12 @@ ovsdb_idl_modify_row(struct ovsdb_idl_row *row, const
struct json *row_json)
{
bool changed;
+ ovsdb_idl_remove_from_indexes(row);
ovsdb_idl_row_unparse(row);
ovsdb_idl_row_clear_arcs(row, true);
changed = ovsdb_idl_row_update(row, row_json, OVSDB_IDL_CHANGE_MODIFY);
ovsdb_idl_row_parse(row);
+ ovsdb_idl_add_to_indexes(row);
return changed;
}
diff --git a/lib/ovsdb-idl.h b/lib/ovsdb-idl.h
index e2e2a5e..de287b1 100644
--- a/lib/ovsdb-idl.h
+++ b/lib/ovsdb-idl.h
@@ -1,4 +1,5 @@
/* Copyright (c) 2009, 2010, 2011, 2012, 2013, 2014, 2015 Nicira, Inc.
+ * Copyright (C) 2016 Hewlett Packard Enterprise Development LP
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -38,6 +39,7 @@
#include <stdint.h>
#include "compiler.h"
#include "ovsdb-types.h"
+#include "skiplist.h"
struct json;
struct ovsdb_datum;
@@ -277,5 +279,62 @@ struct ovsdb_idl_loop {
void ovsdb_idl_loop_destroy(struct ovsdb_idl_loop *);
struct ovsdb_idl_txn *ovsdb_idl_loop_run(struct ovsdb_idl_loop *);
void ovsdb_idl_loop_commit_and_wait(struct ovsdb_idl_loop *);
+
+/*
+ * The OVSDB-IDL Compound Indexes feature allows to create custom
+ * indexes over several columns in the IDL.
+ * With those index, the developer can retrieve rows matching a search
+ * criteria, or show the rows sorted in a specific way.
+ */
+
+struct ovsdb_idl_index *
+ovsdb_idl_create_index(struct ovsdb_idl *idl,
+ const struct ovsdb_idl_table_class *tc,
+ const char *index_name);
+
+#define OVSDB_INDEX_DESC -1
+#define OVSDB_INDEX_ASC 1
+
+/*
+ * Skiplist comparison function. Allows to store sorted data.
+ */
+typedef int
+(column_comparator)(const void *a, const void *b);
+
+struct ovsdb_idl_index_cursor {
+ struct ovsdb_idl_index *index; /* Index used by this cursor */
+ struct skiplist_node *position; /* Current position in the index */
+};
+
+int ovsdb_idl_index_strcmp(char *, char *);
+int ovsdb_idl_index_intcmp(int64_t, int64_t);
+int ovsdb_idl_index_doublecmp(double, double);
+void ovsdb_idl_index_add_column(struct ovsdb_idl_index *,
+ const struct ovsdb_idl_column *,
+ int order,
+ column_comparator *custom_comparer
+ );
+bool ovsdb_idl_initialize_cursor(struct ovsdb_idl *,
+ const struct ovsdb_idl_table_class *tc,
+ const char *index_name,
+ struct ovsdb_idl_index_cursor *cursor);
+void ovsdb_idl_index_write_(struct ovsdb_idl_row *,
+ const struct ovsdb_idl_column *,
+ struct ovsdb_datum *,
+ const struct ovsdb_idl_table_class *);
+struct ovsdb_idl_row *ovsdb_idl_index_init_row(struct ovsdb_idl*,
+ const struct ovsdb_idl_table_class *);
+void ovsdb_idl_index_destroy_row__(const struct ovsdb_idl_row *);
+struct ovsdb_idl_row *ovsdb_idl_index_first(struct ovsdb_idl_index_cursor *);
+struct ovsdb_idl_row *ovsdb_idl_index_next(struct ovsdb_idl_index_cursor *);
+struct ovsdb_idl_row *ovsdb_idl_index_data(struct ovsdb_idl_index_cursor *);
+struct ovsdb_idl_row *ovsdb_idl_index_find(struct ovsdb_idl_index_cursor *,
+ struct ovsdb_idl_row *);
+struct ovsdb_idl_row *ovsdb_idl_index_forward_to(
+ struct ovsdb_idl_index_cursor *,
+ struct ovsdb_idl_row *);
+int ovsdb_idl_index_compare(struct ovsdb_idl_index_cursor *,
+ struct ovsdb_idl_row *a,
+ struct ovsdb_idl_row *b);
#endif /* ovsdb-idl.h */
--
1.9.1
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