Package 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:
  `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 ignore) {}
                }
                if (conn != null) {
                    try {conn.close();}catch (SQLException ignore) {}
                }
            }
        }
        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

Constructors
Constructor
Description
`JDBCTask()`

## Method Summary

Modifier and Type
Method
Description
`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 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 Hashtable<String,AntClassLoader>`
`getLoaderMap()`
Get the cache of loaders and drivers.
`String`
`getPassword()`
Gets the password.
`String`
`getRdbms()`
Gets the rdbms.
`String`
`getUrl()`
Gets the url.
`String`
`getUserId()`
Gets the userId.
`String`
`getVersion()`
Gets the version.
`boolean`
`isAutocommit()`
Gets the autocommit.
`void`
`isCaching(boolean value)`
Set the caching attribute.
`protected boolean`
`isValidRdbms(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(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(String password)`
Sets the password; required.
`void`
`setRdbms(String rdbms)`
Execute task only if the lower case product name of the DB matches this
`void`
`setUrl(String url)`
Sets the database connection URL; required.
`void`
`setUserid(String userId)`
Set the user name for the connection; required.
`void`
`setVersion(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 Details

### JDBCTask

public JDBCTask()

## Method Details

### 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(String driver)
Class name of the JDBC driver; required.

Parameters:
  `driver` - The driver to set

### setUrl

public void setUrl(String url)
Sets the database connection URL; required.

Parameters:
  `url` - The url to set

### setPassword

public void setPassword(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(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(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.

Parameters:
  `b` - boolean
Since:
  Ant 1.8.0

### isValidRdbms

protected boolean isValidRdbms(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 Hashtable<String,AntClassLoader> 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.

Parameters:
  `var` - Property
Since:
  Ant 1.8.0

### getConnection

protected 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 String getUrl()
Gets the url.

Returns:
  Returns a String

### getUserId

public String getUserId()
Gets the userId.

Returns:
  Returns a String

### setUserid

public void setUserid(String userId)
Set the user name for the connection; required.

Parameters:
  `userId` - The userId to set

### getPassword

public String getPassword()
Gets the password.

Returns:
  Returns a String

### getRdbms

public String getRdbms()
Gets the rdbms.

Returns:
  Returns a String

### getVersion

public String getVersion()
Gets the version.

Returns:
  Returns a String