JDBCTask (Apache Ant API)

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## org.apache.tools.ant.taskdefs
Class JDBCTask

    java.lang.Object
      org.apache.tools.ant.ProjectComponent
          org.apache.tools.ant.Task
              org.apache.tools.ant.taskdefs.JDBCTask

All Implemented Interfaces:
  java.lang.Cloneable

Direct Known Subclasses:
  SQLExec

    public abstract class JDBCTask

extends Task

Handles JDBC configuration needed by SQL type tasks.

The following example class prints the contents of the first column of each row in TableName.

`

    package examples;
    import java.sql.Connection;
    import java.sql.ResultSet;
    import java.sql.SQLException;
    import java.sql.Statement;

    import org.apache.tools.ant.BuildException;
    import org.apache.tools.ant.taskdefs.JDBCTask;

    public class SQLExampleTask extends JDBCTask {

        private String tableName;

        public void execute() throws BuildException {
            Connection conn = getConnection();
            Statement stmt=null;
            try {
                if (tableName == null) {
                    throw new BuildException("TableName must be specified",location);
                }
                String sql = "SELECT * FROM "+tableName;
                stmt= conn.createStatement();
                ResultSet rs = stmt.executeQuery(sql);
                while (rs.next()) {
                    log(rs.getObject(1).toString());
                }
            } catch (SQLException e) {

            } finally {
                if (stmt != null) {
                    try {stmt.close();}catch (SQLException ingore) {}
                }
                if (conn != null) {
                    try {conn.close();}catch (SQLException ingore) {}
                }
            }
        }
        public void setTableName(String tableName) {
            this.tableName = tableName;
        }

    }

`

Since:
  Ant 1.5

Field Summary

Fields inherited from class org.apache.tools.ant.Task
`target, taskName, taskType, wrapper`

Fields inherited from class org.apache.tools.ant.ProjectComponent
`description, location, project`

Constructor Summary
`JDBCTask()`

Method Summary
`void` | `addConnectionProperty(Property var)` Additional properties to put into the JDBC connection string.
`Path` | `createClasspath()` Add a path to the classpath for loading the driver.
`Path` | `getClasspath()` Gets the classpath.
`protected java.sql.Connection` | `getConnection()` Creates a new Connection as using the driver, url, userid and password specified.
`protected AntClassLoader` | `getLoader()` Get the classloader used to create a driver.
`protected static java.util.Hashtable` | `getLoaderMap()` Get the cache of loaders and drivers.
`java.lang.String` | `getPassword()` Gets the password.
`java.lang.String` | `getRdbms()` Gets the rdbms.
`java.lang.String` | `getUrl()` Gets the url.
`java.lang.String` | `getUserId()` Gets the userId.
`java.lang.String` | `getVersion()` Gets the version.
`boolean` | `isAutocommit()` Gets the autocommit.
`void` | `isCaching(boolean value)` Set the caching attribute.
`protected boolean` | `isValidRdbms(java.sql.Connection conn)` Verify we are connected to the correct RDBMS
`void` | `setAutocommit(boolean autocommit)` Auto commit flag for database connection; optional, default false.
`void` | `setCaching(boolean enable)` Caching loaders / driver.
`void` | `setClasspath(Path classpath)` Sets the classpath for loading the driver.
`void` | `setClasspathRef(Reference r)` Set the classpath for loading the driver using the classpath reference.
`void` | `setDriver(java.lang.String driver)` Class name of the JDBC driver; required.
`void` | `setFailOnConnectionError(boolean b)` whether the task should cause the build to fail if it cannot connect to the database.
`void` | `setPassword(java.lang.String password)` Sets the password; required.
`void` | `setRdbms(java.lang.String rdbms)` Execute task only if the lower case product name of the DB matches this
`void` | `setUrl(java.lang.String url)` Sets the database connection URL; required.
`void` | `setUserid(java.lang.String userId)` Set the user name for the connection; required.
`void` | `setVersion(java.lang.String version)` Sets the version string, execute task only if rdbms version match; optional.

Methods inherited from class org.apache.tools.ant.Task
`bindToOwner, execute, getOwningTarget, getRuntimeConfigurableWrapper, getTaskName, getTaskType, getWrapper, handleErrorFlush, handleErrorOutput, handleFlush, handleInput, handleOutput, init, isInvalid, log, log, log, log, maybeConfigure, perform, reconfigure, setOwningTarget, setRuntimeConfigurableWrapper, setTaskName, setTaskType`

Methods inherited from class org.apache.tools.ant.ProjectComponent
`clone, getDescription, getLocation, getProject, setDescription, setLocation, setProject`

Methods inherited from class java.lang.Object
`equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### JDBCTask

    public JDBCTask()

Method Detail

### setClasspath

    public void setClasspath(Path classpath)

  Sets the classpath for loading the driver.

  Parameters:
    `classpath` - The classpath to set

### setCaching

    public void setCaching(boolean enable)

  Caching loaders / driver. This is to avoid getting an OutOfMemoryError when calling this task multiple times in a row; default: true

  Parameters:
    `enable` - a `boolean` value

### createClasspath

    public Path createClasspath()

  Add a path to the classpath for loading the driver.

  Returns:
    a path to be configured

### setClasspathRef

    public void setClasspathRef(Reference r)

  Set the classpath for loading the driver using the classpath reference.

  Parameters:
    `r` - a reference to a classpath

### setDriver

    public void setDriver(java.lang.String driver)

  Class name of the JDBC driver; required.

  Parameters:
    `driver` - The driver to set

### setUrl

    public void setUrl(java.lang.String url)

  Sets the database connection URL; required.

  Parameters:
    `url` - The url to set

### setPassword

    public void setPassword(java.lang.String password)

  Sets the password; required.

  Parameters:
    `password` - The password to set

### setAutocommit

    public void setAutocommit(boolean autocommit)

  Auto commit flag for database connection; optional, default false.

  Parameters:
    `autocommit` - The autocommit to set

### setRdbms

    public void setRdbms(java.lang.String rdbms)

  Execute task only if the lower case product name of the DB matches this

  Parameters:
    `rdbms` - The rdbms to set

### setVersion

    public void setVersion(java.lang.String version)

  Sets the version string, execute task only if rdbms version match; optional.

  Parameters:
    `version` - The version to set

### setFailOnConnectionError

    public void setFailOnConnectionError(boolean b)

  whether the task should cause the build to fail if it cannot connect to the database.

  Since:
    Ant 1.8.0

### isValidRdbms

    protected boolean isValidRdbms(java.sql.Connection conn)

  Verify we are connected to the correct RDBMS

  Parameters:
    `conn` - the jdbc connection
  Returns:
    true if we are connected to the correct RDBMS

### getLoaderMap

    protected static java.util.Hashtable getLoaderMap()

  Get the cache of loaders and drivers.

  Returns:
    a hashtable

### getLoader

    protected AntClassLoader getLoader()

  Get the classloader used to create a driver.

  Returns:
    the classloader

### addConnectionProperty

    public void addConnectionProperty(Property var)

  Additional properties to put into the JDBC connection string.

  Since:
    Ant 1.8.0

### getConnection

    protected java.sql.Connection getConnection()
                                         throws BuildException

  Creates a new Connection as using the driver, url, userid and password specified. The calling method is responsible for closing the connection.

  Returns:
    Connection the newly created connection or null if the connection failed and failOnConnectionError is false.
  Throws:
    `BuildException` - if the UserId/Password/Url is not set or there is no suitable driver or the driver fails to load.

### isCaching

    public void isCaching(boolean value)

  Set the caching attribute.

  Parameters:
    `value` - a `boolean` value

### getClasspath

    public Path getClasspath()

  Gets the classpath.

  Returns:
    Returns a Path

### isAutocommit

    public boolean isAutocommit()

  Gets the autocommit.

  Returns:
    Returns a boolean

### getUrl

    public java.lang.String getUrl()

  Gets the url.

  Returns:
    Returns a String

### getUserId

    public java.lang.String getUserId()

  Gets the userId.

  Returns:
    Returns a String

### setUserid

    public void setUserid(java.lang.String userId)

  Set the user name for the connection; required.

  Parameters:
    `userId` - The userId to set

### getPassword

    public java.lang.String getPassword()

  Gets the password.

  Returns:
    Returns a String

### getRdbms

    public java.lang.String getRdbms()

  Gets the rdbms.

  Returns:
    Returns a String

### getVersion

    public java.lang.String getVersion()

  Gets the version.

  Returns:
    Returns a String

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