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package org.gnunet.seaspider;
import java.io.File;
import org.tmatesoft.sqljet.core.SqlJetException;
import org.tmatesoft.sqljet.core.SqlJetTransactionMode;
import org.tmatesoft.sqljet.core.table.ISqlJetTable;
import org.tmatesoft.sqljet.core.table.SqlJetDb;
public class ExpressionDatabaseHandler {
private static SqlJetDb db = null;
public static void createExpressionDatabase(String databasePath) {
String createTableQuery = "CREATE TABLE Expression ( expr_ID INT NOT NULL PRIMARY KEY , " +
"file_name TEXT NOT NULL , expr_syntax TEXT NOT NULL ," +
" start_lineno INT, end_lineno INT)";
File dbFile = new File(databasePath + "/GNUnetExpressions.db");
dbFile.delete();/* Delete it if already existent */
/* Create Expressions database */
try {
db = SqlJetDb.open(dbFile, true);
db.getOptions().setAutovacuum(true);
db.beginTransaction(SqlJetTransactionMode.WRITE);
try {
db.getOptions().setUserVersion(1);/* Sets the user's cookie */
} finally {
db.commit();
}
/* Create table Expression */
db.createTable(createTableQuery);
}
catch (SqlJetException e) {
e.printStackTrace();
}
}
public static void closeDatabase()
{
try {
db.close();
} catch (SqlJetException e) {
e.printStackTrace();
}
}
public static void insertIntoExpressionTable(String fileName, String expressionSyntax,
int startLineNo, int endLineNo)
{
if (expressionSyntax.matches("[0-9]*"))
return;
if (expressionSyntax.startsWith("\""))
return;
if (false)
System.out.println (fileName + ":[" + startLineNo + "-" + endLineNo + "]: " + expressionSyntax);
if (true)
return;
if (db == null) {
System.out.println("Error:Database handle is not initialized. Program will exit now!");
System.exit(1);
}
ISqlJetTable table;
try {
table = db.getTable("Expression");
db.beginTransaction(SqlJetTransactionMode.WRITE);
try {
table.insert(fileName, expressionSyntax, startLineNo, endLineNo);
} finally {
db.commit();
}
}
catch (SqlJetException e) {
e.printStackTrace();
}
}
}
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