Esempio JDBC di individuazione e classificazione dei dati SQL

Scaricare il driver JDBC

Questa applicazione di esempio del driver Microsoft JDBC per SQL Server dimostra come usare i metodi getter del set di risultati per recuperare dalle tabelle che archiviano tali informazioni le informazioni di SQL Server sulla funzionalità 'SQL Data Discovery and Classification'.

Il file di codice per questo esempio è denominato DataDiscoveryAndClassification.java ed è disponibile nel percorso seguente:

\<installation directory>\sqljdbc_<version>\<language>\samples\dataclassification

Requisiti

Per eseguire questa applicazione di esempio, è necessario impostare il classpath in modo da includere il file con estensione jar mssql-jdbc. Sarà anche necessario accedere al database di esempio AdventureWorks2025. Per altre informazioni su come impostare il classpath, vedere Uso del driver JDBC.

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;

import com.microsoft.sqlserver.jdbc.SQLServerResultSet;
import com.microsoft.sqlserver.jdbc.dataclassification.SensitivityProperty;


public class DataDiscoveryAndClassification {

    private static boolean featureSupported = false;

    public static void main(String[] args) {

        // Provides table name to be used for running test.
        String tableName = "JDBC_SQL_DATA_DISCOVERY_CLASSIFICATION";

        // Create a variable for the connection string.
        String connectionUrl = "jdbc:sqlserver://<server>:<port>;encrypt=true;databaseName=<database>;username=<user>;password=<password>;";

        // Establish the connection.
        try (Connection con = DriverManager.getConnection(connectionUrl); Statement stmt = con.createStatement()) {
            verifySupportability(stmt);
            if (featureSupported) {
                createTable(stmt, tableName);
                runTests(stmt, tableName);
                drop_table(stmt, tableName);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * Verifies if SQL Discovery and Classification feature is applicable on target server.
     * 
     * @param stmt
     *        Statement object to work with
     */
    private static void verifySupportability(Statement stmt) {
        try {
            stmt.execute("SELECT * FROM SYS.SENSITIVITY_CLASSIFICATIONS");
            featureSupported = true;
        } catch (SQLException e) {
            // Error Code 208 : Object Not Found
            if (e.getErrorCode() == 208) {
                featureSupported = false;
                System.err.println("This feature is not supported on the target SQL Server.");
            }
        }
    }

    /**
     * Creates table for the test and sets tags for Sensitivity Classification
     * 
     * @param stmt
     *        Statement to work with
     * @param tableName
     *        Table to be created
     * @throws SQLException
     *         If an exception occurs
     */
    private static void createTable(Statement stmt, String tableName) throws SQLException {
        // Creates table for storing Supplier data
        stmt.execute("CREATE TABLE " + tableName + " (" + "[Id] [int] IDENTITY(1,1) NOT NULL,"
                + "[CompanyName] [nvarchar](40) NOT NULL," + "[ContactName] [nvarchar](50) NULL,"
                + "[ContactTitle] [nvarchar](40) NULL," + "[City] [nvarchar](40) NULL,"
                + "[Country] [nvarchar](40) NULL," + "[Phone] [nvarchar](30) MASKED WITH (FUNCTION = 'default()') NULL,"
                + "[Fax] [nvarchar](30) MASKED WITH (FUNCTION = 'default()') NULL," + "CONSTRAINT [PK_" + tableName
                + "] PRIMARY KEY CLUSTERED" + "([Id] ASC "
                + ")WITH (STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF) ON [PRIMARY]" + ") ON [PRIMARY]");

        // Set Sensitivity Classification tags to table columns
        stmt.execute("ADD SENSITIVITY CLASSIFICATION TO " + tableName
                + ".CompanyName WITH (LABEL='PII', LABEL_ID='L1', INFORMATION_TYPE='Company name', INFORMATION_TYPE_ID='COMPANY', RANK='LOW')");
        stmt.execute("ADD SENSITIVITY CLASSIFICATION TO " + tableName
                + ".ContactName WITH (LABEL='PII', LABEL_ID='L1', INFORMATION_TYPE='Person name', INFORMATION_TYPE_ID='NAME', RANK='MEDIUM')");
        stmt.execute("ADD SENSITIVITY CLASSIFICATION TO " + tableName
                + ".Phone WITH (LABEL='PII', LABEL_ID='L1', INFORMATION_TYPE='Contact Information', INFORMATION_TYPE_ID='CONTACT', RANK='HIGH')");
        stmt.execute("ADD SENSITIVITY CLASSIFICATION TO " + tableName
                + ".Fax WITH (LABEL='PII', LABEL_ID='L1', INFORMATION_TYPE='Contact Information', INFORMATION_TYPE_ID='CONTACT', RANK='CRITICAL')");
    }

    /**
     * Runs query to fetch ResultSet from target table
     * 
     * @param stmt
     *        Statement to work with
     * @param tableName
     *        Name of table to fetch results from
     * @throws SQLException
     *         If an exception occurs
     */
    private static void runTests(Statement stmt, String tableName) throws SQLException {
        String query = "SELECT * FROM " + tableName;
        try (SQLServerResultSet rs = (SQLServerResultSet) stmt.executeQuery(query)) {
            printSensitivityClassification(rs);
        }
    }

    /**
     * Prints Sensitivity Classification data as received in ResultSet
     * 
     * @param rs
     *        Active ResultSet to read data from
     * @throws SQLException
     *         If an exception occurs
     */
    private static void printSensitivityClassification(SQLServerResultSet rs) throws SQLException {
        if (null != rs.getSensitivityClassification()) {
            for (int columnPos = 0; columnPos < rs.getSensitivityClassification().getColumnSensitivities().size();
                    columnPos++) {
                for (SensitivityProperty sp : rs.getSensitivityClassification().getColumnSensitivities().get(columnPos)
                        .getSensitivityProperties()) {
                    if (sp.getLabel() != null) {
                        System.out.println("Labels received for Column : " + columnPos);
                        System.out.println("Label ID: " + sp.getLabel().getId());
                        System.out.println("Label Name: " + sp.getLabel().getName());
                        System.out.println();
                    }

                    if (sp.getInformationType() != null) {
                        System.out.println("Information Types received for Column : " + columnPos);
                        System.out.println("Information Type ID: " + sp.getInformationType().getId());
                        System.out.println("Information Type Name: " + sp.getInformationType().getName());
                        System.out.println();
                    }
                    
                    System.out.println("Rank: " + sp.getSensitivityRank());
                }
                
                System.out.println("Rank: " + rs.getSensitivityClassification.getSensitivityRank());
            }
        }
    }

    /**
     * Drops the table created for test
     * 
     * @param stmt
     *        Statement to work with
     * @param tableName
     *        Table Name to be used
     * @throws SQLException
     *         If an exception occurs
     */
    private static void drop_table(Statement stmt, String tableName) throws SQLException {
        stmt.execute("DROP TABLE " + tableName);
    }
}

Contenuti correlati

• Applicazioni di esempio del driver JDBC