Admin: 1 версия

2010-06-01T06:34:48Z

1 версия

в 18:01, 31 мая 2010

2010-05-31T18:01:44Z

Новая страница

== Get Index Info ==



<source lang="java">

import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
public class Main {
public static void main(String[] args) throws Exception {
Connection conn = getMySqlConnection();
System.out.println("Got Connection.");
Statement st = conn.createStatement();
st.executeUpdate("drop table survey;");
st.executeUpdate("create table survey (id int,name varchar(30));");
st.executeUpdate("insert into survey (id,name ) values (1,"nameValue")");
ResultSet indexInformation = null;
DatabaseMetaData meta = conn.getMetaData();
// The "_" character represents any single character.
// The "%" character represents any sequence of zero
// or more characters.
indexInformation = meta.getIndexInfo(conn.getCatalog(), null, "survey", true, true);
while (indexInformation.next()) {
String dbCatalog = indexInformation.getString("TABLE_CATALOG");
String dbSchema = indexInformation.getString("TABLE_SCHEMA");
String dbTableName = indexInformation.getString("TABLE_NAME");
boolean dbNoneUnique = indexInformation.getBoolean("NON_UNIQUE");
String dbIndexQualifier = indexInformation.getString("INDEX_QUALIFIER");
String dbIndexName = indexInformation.getString("INDEX_NAME");
short dbType = indexInformation.getShort("TYPE");
short dbOrdinalPosition = indexInformation.getShort("ORDINAL_POSITION");
String dbColumnName = indexInformation.getString("COLUMN_NAME");
String dbAscOrDesc = indexInformation.getString("ASC_OR_DESC");
int dbCardinality = indexInformation.getInt("CARDINALITY");
int dbPages = indexInformation.getInt("PAGES");
String dbFilterCondition = indexInformation.getString("FILTER_CONDITION");
System.out.println("index name=" + dbIndexName);
System.out.println("table=" + dbTableName);
System.out.println("column=" + dbColumnName);
System.out.println("catalog=" + dbCatalog);
System.out.println("schema=" + dbSchema);
System.out.println("nonUnique=" + dbNoneUnique);
System.out.println("indexQualifier=" + dbIndexQualifier);
System.out.println("type=" + dbType);
System.out.println("ordinalPosition=" + dbOrdinalPosition);
System.out.println("ascendingOrDescending=" + dbAscOrDesc);
System.out.println("cardinality=" + dbCardinality);
System.out.println("pages=" + dbPages);
System.out.println("filterCondition=" + dbFilterCondition);
}
st.close();
conn.close();
}
private static Connection getHSQLConnection() throws Exception {
Class.forName("org.hsqldb.jdbcDriver");
System.out.println("Driver Loaded.");
String url = "jdbc:hsqldb:data/tutorial";
return DriverManager.getConnection(url, "sa", "");
}
public static Connection getMySqlConnection() throws Exception {
String driver = "org.gjt.mm.mysql.Driver";
String url = "jdbc:mysql://localhost/demo2s";
String username = "oost";
String password = "oost";
Class.forName(driver);
Connection conn = DriverManager.getConnection(url, username, password);
return conn;
}
public static Connection getOracleConnection() throws Exception {
String driver = "oracle.jdbc.driver.OracleDriver";
String url = "jdbc:oracle:thin:@localhost:1521:caspian";
String username = "mp";
String password = "mp2";
Class.forName(driver); // load Oracle driver
Connection conn = DriverManager.getConnection(url, username, password);
return conn;
}
}

</source>



== Get Index Type ==



<source lang="java">
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
public class Main {
public static void main(String[] args) throws Exception {
Connection conn = getMySqlConnection();
System.out.println("Got Connection.");
Statement st = conn.createStatement();
st.executeUpdate("drop table survey;");
st.executeUpdate("create table survey (id int,name varchar(30));");
st.executeUpdate("insert into survey (id,name ) values (1,"nameValue")");
ResultSet indexInformation = null;
DatabaseMetaData meta = conn.getMetaData();
// The "_" character represents any single character.
// The "%" character represents any sequence of zero
// or more characters.
indexInformation = meta.getIndexInfo(conn.getCatalog(), null, "survey", true, true);
while (indexInformation.next()) {
short type = indexInformation.getShort("TYPE");
switch (type) {
case DatabaseMetaData.tableIndexClustered:
System.out.println("tableIndexClustered");
case DatabaseMetaData.tableIndexHashed:
System.out.println("tableIndexHashed");
case DatabaseMetaData.tableIndexOther:
System.out.println("tableIndexOther");
case DatabaseMetaData.tableIndexStatistic:
System.out.println("tableIndexStatistic");
default:
System.out.println("tableIndexOther");
}
}
st.close();
conn.close();
}
private static Connection getHSQLConnection() throws Exception {
Class.forName("org.hsqldb.jdbcDriver");
System.out.println("Driver Loaded.");
String url = "jdbc:hsqldb:data/tutorial";
return DriverManager.getConnection(url, "sa", "");
}
public static Connection getMySqlConnection() throws Exception {
String driver = "org.gjt.mm.mysql.Driver";
String url = "jdbc:mysql://localhost/demo2s";
String username = "oost";
String password = "oost";
Class.forName(driver);
Connection conn = DriverManager.getConnection(url, username, password);
return conn;
}
public static Connection getOracleConnection() throws Exception {
String driver = "oracle.jdbc.driver.OracleDriver";
String url = "jdbc:oracle:thin:@localhost:1521:caspian";
String username = "mp";
String password = "mp2";
Class.forName(driver); // load Oracle driver
Connection conn = DriverManager.getConnection(url, username, password);
return conn;
}
}

</source>

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Admin: 1 версия

в 18:01, 31 мая 2010