/**
* Check whether the parameter of dbSchema is valid and check whether the table is existent in
* Database Schema.
*/
private boolean isValid() {
if (dbSchema == null) {
return false;
}
if (!dbSchema.name().equalsIgnoreCase(tableDesc.database())) {
return false;
}
checkTableSchemaVersion();
return true;
}
/**
* Returns ColumnSchema from TableSchema by column name.
*
* @param columnName column name
* @return ColumnSchema
*/
private ColumnSchema getColumnSchema(String columnName) {
TableSchema tableSchema = getTableSchema();
if (tableSchema == null) {
String message =
TableSchemaNotFoundException.createMessage(tableDesc.name(), dbSchema.name());
throw new TableSchemaNotFoundException(message);
}
ColumnSchema columnSchema = tableSchema.getColumnSchema(columnName);
if (columnSchema == null) {
String message = ColumnSchemaNotFoundException.createMessage(columnName, tableSchema.name());
throw new ColumnSchemaNotFoundException(message);
}
return columnSchema;
}
