protected PreparedStatement getExistQuery(Connection conn, DatabaseObjectType type)
throws SQLException {
PreparedStatement pstmt = null;
for (SQLObject existQuery : catalogStore.getExistQueries()) {
if (type.equals(existQuery.getType())) {
pstmt = conn.prepareStatement(existQuery.getSql());
break;
}
}
return pstmt;
}
protected void validateSQLObject(List<SQLObject> queries, SQLObject testQuery) {
int occurredCount = 0;
for (SQLObject query : queries) {
if (query.getType() == testQuery.getType()) {
occurredCount++;
}
}
if (occurredCount > 1) {
throw new TajoInternalError(
"Duplicate Query type (" + testQuery.getType() + ") has found.");
}
}
protected String getDropSQL(DatabaseObjectType type, String name) {
SQLObject foundDropQuery = null;
String sqlStatement = "DROP " + type.toString() + " " + name;
for (SQLObject dropQuery : catalogStore.getDropStatements()) {
if (type == dropQuery.getType()) {
foundDropQuery = dropQuery;
break;
}
}
if (foundDropQuery != null
&& foundDropQuery.getSql() != null
&& !foundDropQuery.getSql().isEmpty()) {
String dropStatement = foundDropQuery.getSql();
StringBuffer sqlBuffer = new StringBuffer(dropStatement.length() + name.length());
int identifier = dropStatement.indexOf('?');
sqlBuffer
.append(dropStatement.substring(0, identifier))
.append(name)
.append(dropStatement.substring(identifier + 1));
sqlStatement = sqlBuffer.toString();
}
return sqlStatement;
}