本文整理汇总了C++中WT_CURSOR::compare方法的典型用法代码示例。如果您正苦于以下问题：C++ WT_CURSOR::compare方法的具体用法？C++ WT_CURSOR::compare怎么用？C++ WT_CURSOR::compare使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类WT_CURSOR的用法示例。
在下文中一共展示了WT_CURSOR::compare方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: strlen
//.........这里部分代码省略.........
}
{
/*! [Set the cursor's string value] */
/* Set the cursor's string value. */
const char *value = "another value";
cursor->set_value(cursor, value);
/*! [Set the cursor's string value] */
}
{
/*! [Set the cursor's raw value] */
WT_ITEM value; /* Set the cursor's raw value. */
value.data = "another value";
value.size = strlen("another value");
cursor->set_value(cursor, &value);
/*! [Set the cursor's raw value] */
}
/*! [Return the next record] */
ret = cursor->next(cursor);
/*! [Return the next record] */
/*! [Return the previous record] */
ret = cursor->prev(cursor);
/*! [Return the previous record] */
/*! [Reset the cursor] */
ret = cursor->reset(cursor);
/*! [Reset the cursor] */
{
WT_CURSOR *other = NULL;
/*! [Cursor comparison] */
int compare;
ret = cursor->compare(cursor, other, &compare);
if (compare == 0) {
/* Cursors reference the same key */
} else if (compare < 0) {
/* Cursor key less than other key */
} else if (compare > 0) {
/* Cursor key greater than other key */
}
/*! [Cursor comparison] */
}
{
/*! [Search for an exact match] */
const char *key = "some key";
cursor->set_key(cursor, key);
ret = cursor->search(cursor);
/*! [Search for an exact match] */
}
cursor_search_near(cursor);
{
/*! [Insert a new record] */
/* Insert a new record. */
const char *key = "some key", *value = "some value";
cursor->set_key(cursor, key);
cursor->set_value(cursor, value);
ret = cursor->insert(cursor);
/*! [Insert a new record] */
}
{示例2: strlen
//.........这里部分代码省略.........
}
{
/*! [Get the cursor's raw value] */
WT_ITEM value; /* Get the cursor's raw value. */
ret = cursor->get_value(cursor, &value);
/*! [Get the cursor's raw value] */
}
{
/*! [Set the cursor's raw value] */
WT_ITEM value; /* Set the cursor's raw value. */
value.data = "another value";
value.size = strlen("another value");
cursor->set_value(cursor, &value);
/*! [Set the cursor's raw value] */
}
/*! [Return the next record] */
ret = cursor->next(cursor);
/*! [Return the next record] */
/*! [Return the previous record] */
ret = cursor->prev(cursor);
/*! [Return the previous record] */
/*! [Reset the cursor] */
ret = cursor->reset(cursor);
/*! [Reset the cursor] */
{
WT_CURSOR *other = NULL;
/*! [Cursor comparison] */
int compare;
ret = cursor->compare(cursor, other, &compare);
if (compare == 0) {
/* Cursors reference the same key */
} else if (compare < 0) {
/* Cursor key less than other key */
} else if (compare > 0) {
/* Cursor key greater than other key */
}
/*! [Cursor comparison] */
}
{
/*! [Search for an exact match] */
const char *key = "some key";
cursor->set_key(cursor, key);
ret = cursor->search(cursor);
/*! [Search for an exact match] */
}
cursor_search_near(cursor);
{
/*! [Insert a new record or overwrite an existing record] */
/* Insert a new record or overwrite an existing record. */
const char *key = "some key", *value = "some value";
ret = session->open_cursor(
session, "table:mytable", NULL, NULL, &cursor);
cursor->set_key(cursor, key);
cursor->set_value(cursor, value);
ret = cursor->insert(cursor);
/*! [Insert a new record or overwrite an existing record] */
}示例3: strlen
//.........这里部分代码省略.........
/*! [Get the cursor's raw value] */
}
{
/*! [Set the cursor's raw value] */
WT_ITEM value; /* Set the cursor's raw value. */
value.data = "another value";
value.size = strlen("another value");
cursor->set_value(cursor, &value);
/*! [Set the cursor's raw value] */
error_check(cursor->insert(cursor));
}
/*! [Return the next record] */
error_check(cursor->next(cursor));
/*! [Return the next record] */
/*! [Reset the cursor] */
error_check(cursor->reset(cursor));
/*! [Reset the cursor] */
/*! [Return the previous record] */
error_check(cursor->prev(cursor));
/*! [Return the previous record] */
{
WT_CURSOR *other = NULL;
error_check(
session->open_cursor(session, NULL, cursor, NULL, &other));
{
/*! [Cursor comparison] */
int compare;
error_check(cursor->compare(cursor, other, &compare));
if (compare == 0) {
/* Cursors reference the same key */
} else if (compare < 0) {
/* Cursor key less than other key */
} else if (compare > 0) {
/* Cursor key greater than other key */
}
/*! [Cursor comparison] */
}
{
/*! [Cursor equality] */
int equal;
error_check(cursor->equals(cursor, other, &equal));
if (equal) {
/* Cursors reference the same key */
}
/*! [Cursor equality] */
}
}
{
/*! [Insert a new record or overwrite an existing record] */
/* Insert a new record or overwrite an existing record. */
const char *key = "some key", *value = "some value";
error_check(session->open_cursor(
session, "table:mytable", NULL, NULL, &cursor));
cursor->set_key(cursor, key);
cursor->set_value(cursor, value);
error_check(cursor->insert(cursor));
/*! [Insert a new record or overwrite an existing record] */