本文整理汇总了Java中org.apache.cassandra.db.SystemKeyspace.schemaCFS方法的典型用法代码示例。如果您正苦于以下问题：Java SystemKeyspace.schemaCFS方法的具体用法？Java SystemKeyspace.schemaCFS怎么用？Java SystemKeyspace.schemaCFS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org.apache.cassandra.db.SystemKeyspace的用法示例。
在下文中一共展示了SystemKeyspace.schemaCFS方法的2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Java代码示例。
示例1: loadSchemas
import org.apache.cassandra.db.SystemKeyspace; //导入方法依赖的package包/类
/**
* Load schema definitions.
*
* @param updateVersion true if schema version needs to be updated
*/
public static void loadSchemas(boolean updateVersion)
{
ColumnFamilyStore schemaCFS = SystemKeyspace.schemaCFS(SystemKeyspace.SCHEMA_KEYSPACES_CF);
// if keyspace with definitions is empty try loading the old way
if (schemaCFS.estimateKeys() == 0)
{
logger.info("Couldn't detect any schema definitions in local storage.");
// peek around the data directories to see if anything is there.
if (hasExistingNoSystemTables())
logger.info("Found keyspace data in data directories. Consider using cqlsh to define your schema.");
else
logger.info("To create keyspaces and column families, see 'help create' in cqlsh.");
}
else
{
Schema.instance.load(DefsTables.loadFromKeyspace());
}
if (updateVersion)
Schema.instance.updateVersion();
}
示例2: loadSchemas
import org.apache.cassandra.db.SystemKeyspace; //导入方法依赖的package包/类
/** load keyspace (keyspace) definitions, but do not initialize the keyspace instances. */
public static void loadSchemas()
{
ColumnFamilyStore schemaCFS = SystemKeyspace.schemaCFS(SystemKeyspace.SCHEMA_KEYSPACES_CF);
// if keyspace with definitions is empty try loading the old way
if (schemaCFS.estimateKeys() == 0)
{
logger.info("Couldn't detect any schema definitions in local storage.");
// peek around the data directories to see if anything is there.
if (hasExistingNoSystemTables())
logger.info("Found keyspace data in data directories. Consider using cqlsh to define your schema.");
else
logger.info("To create keyspaces and column families, see 'help create' in cqlsh.");
}
else
{
Schema.instance.load(DefsTables.loadFromKeyspace());
}
Schema.instance.updateVersion();
}