/**
* Bind this LockTableNode. This means looking up the table, verifying it exists and getting the
* heap conglomerate number.
*
* @exception StandardException Thrown on error
*/
public void bindStatement() throws StandardException {
CompilerContext cc = getCompilerContext();
ConglomerateDescriptor cd;
DataDictionary dd = getDataDictionary();
SchemaDescriptor sd;
String schemaName = tableName.getSchemaName();
sd = getSchemaDescriptor(schemaName);
// Users are not allowed to lock system tables
if (sd.isSystemSchema()) {
throw StandardException.newException(
SQLState.LANG_NO_USER_DDL_IN_SYSTEM_SCHEMA, statementToString(), schemaName);
}
lockTableDescriptor = getTableDescriptor(tableName.getTableName(), sd);
if (lockTableDescriptor == null) {
// Check if the reference is for a synonym.
TableName synonymTab = resolveTableToSynonym(tableName);
if (synonymTab == null)
throw StandardException.newException(SQLState.LANG_TABLE_NOT_FOUND, tableName);
tableName = synonymTab;
sd = getSchemaDescriptor(tableName.getSchemaName());
lockTableDescriptor = getTableDescriptor(synonymTab.getTableName(), sd);
if (lockTableDescriptor == null)
throw StandardException.newException(SQLState.LANG_TABLE_NOT_FOUND, tableName);
}
// throw an exception if user is attempting to lock a temporary table
if (lockTableDescriptor.getTableType() == TableDescriptor.GLOBAL_TEMPORARY_TABLE_TYPE) {
throw StandardException.newException(
SQLState.LANG_NOT_ALLOWED_FOR_DECLARED_GLOBAL_TEMP_TABLE);
}
conglomerateNumber = lockTableDescriptor.getHeapConglomerateId();
/* Get the base conglomerate descriptor */
cd = lockTableDescriptor.getConglomerateDescriptor(conglomerateNumber);
/* Statement is dependent on the TableDescriptor and ConglomerateDescriptor */
cc.createDependency(lockTableDescriptor);
cc.createDependency(cd);
if (isPrivilegeCollectionRequired()) {
// need SELECT privilege to perform lock table statement.
cc.pushCurrentPrivType(Authorizer.SELECT_PRIV);
cc.addRequiredTablePriv(lockTableDescriptor);
cc.popCurrentPrivType();
}
}
