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## groovy.sql
[Java] Class DataSet

    java.lang.Object
      groovy.sql.Sql
          groovy.sql.DataSet

    public class DataSet
    extends Sql

An enhancement of Groovy's Sql class providing support for accessing and querying databases using POGO fields and operators rather than JDBC-level API calls and RDBMS column names. So, instead of a query like:

     def db = // an instance of groovy.sql.Sql
     def sql = '''select * from Person
         where (purchaseCount > ? and birthMonth = ?)
         and (lastName < ? or lastName > ?)
         and age < ? and age > ? and firstName != ?
         order by firstName DESC, age'''
     def params = [10, "January", "Zulu", "Alpha", 99, 5, "Bert"]
     def sortedPeopleOfInterest = db.rows(sql, params)

You can write code like this:

     def person = new DataSet(db, 'Person') // or db.dataSet('Person'), or db.dataSet(Person)
     def janFrequentBuyers = person.findAll { it.purchaseCount > 10 && it.lastName == "January" }
     def sortedPeopleOfInterest = janFrequentBuyers.
         findAll{ it.lastName < 'Zulu' || it.lastName > 'Alpha' }.
         findAll{ it.age < 99 }.
         findAll{ it.age > 5 }.
         sort{ it.firstName }.reverse().
         findAll{ it.firstName != 'Bert' }.
         sort{ it.age }

Currently, the Groovy source code for any accessed POGO must be on the classpath at runtime.

Authors:
  Chris Stevenson
  Paul King
  James Strachan

Version:
  \$Revision: 19572 \$

Field Summary

Fields inherited from class Sql
ARRAY, BIGINT, BINARY, BIT, BLOB, BOOLEAN, CHAR, CLOB, DATALINK, DATE, DECIMAL, DISTINCT, DOUBLE, FLOAT, INTEGER, JAVA_OBJECT, LOG, LONGVARBINARY, LONGVARCHAR, NULL, NUMERIC, OTHER, REAL, REF, SMALLINT, STRUCT, TIME, TIMESTAMP, TINYINT, VARBINARY, VARCHAR

Constructor Summary
`DataSet(Sql sql, Class type)`
`DataSet(Sql sql, String table)`

Method Summary
`void` | `add(Map map)`
`void` | `cacheConnection(Closure closure)`
`protected void` | `closeResources(Connection connection, def statement, ResultSet results)`
`protected void` | `closeResources(Connection connection, def statement)`
`void` | `commit()`
`protected Connection` | `createConnection()`
`DataSet` | `createView(Closure criteria)`
`void` | `each(Closure closure)`
`DataSet` | `findAll(Closure where)`
`Object` | `firstRow()` Returns the first row from a DataSet's underlying table
`List` | `getParameters()`
`String` | `getSql()`
`protected SqlOrderByVisitor` | `getSqlOrderByVisitor()`
`protected SqlWhereVisitor` | `getSqlWhereVisitor()`
`DataSet` | `reverse()`
`void` | `rollback()`
`List` | `rows()` Returns a List of all of the rows from the table a DataSet represents
`DataSet` | `sort(Closure sort)`
`void` | `withTransaction(Closure closure)`

Methods inherited from class Sql
ARRAY, BIGINT, BINARY, BIT, BLOB, BOOLEAN, CHAR, CLOB, DATALINK, DATE, DECIMAL, DISTINCT, DOUBLE, FLOAT, INTEGER, JAVA_OBJECT, LONGVARBINARY, LONGVARCHAR, NULL, NUMERIC, OTHER, REAL, REF, SMALLINT, STRUCT, TIME, TIMESTAMP, TINYINT, VARBINARY, VARCHAR, asList, asList, asSql, cacheConnection, cacheStatements, call, call, call, call, call, call, checkForNamedParams, close, closeResources, closeResources, closeResources, commit, configure, createConnection, createPreparedQueryCommand, createQueryCommand, dataSet, dataSet, eachRow, eachRow, eachRow, eachRow, eachRow, eachRow, execute, execute, execute, execute, executeInsert, executeInsert, executeInsert, executeInsert, executePreparedQuery, executeQuery, executeUpdate, executeUpdate, executeUpdate, executeUpdate, expand, findWhereKeyword, firstRow, firstRow, firstRow, firstRow, getConnection, getDataSource, getParameters, getResultSetConcurrency, getResultSetHoldability, getResultSetType, getUpdateCount, in, inout, isCacheNamedQueries, isCacheStatements, isEnableNamedQueries, isWithinBatch, loadDriver, newInstance, newInstance, newInstance, newInstance, newInstance, newInstance, newInstance, nullify, out, query, query, query, resultSet, rollback, rows, rows, rows, rows, rows, rows, rows, setCacheNamedQueries, setCacheStatements, setEnableNamedQueries, setInternalConnection, setObject, setParameters, setResultSetConcurrency, setResultSetHoldability, setResultSetType, withBatch, withBatch, withStatement, withTransaction

Methods inherited from class Object
wait, wait, wait, equals, toString, hashCode, getClass, notify, notifyAll

Constructor Detail

### DataSet

    public DataSet(Sql sql, Class type)

### DataSet

    public DataSet(Sql sql, String table)

Method Detail

### add

    public void add(Map map)

### cacheConnection

    @Override
    public void cacheConnection(Closure closure)

### closeResources

    @Override
    protected void closeResources(Connection connection, def statement, ResultSet results)

### closeResources

    @Override
    protected void closeResources(Connection connection, def statement)

### commit

    @Override
    public void commit()

### createConnection

    @Override
    protected Connection createConnection()

### createView

    public DataSet createView(Closure criteria)

### each

    public void each(Closure closure)

### findAll

    public DataSet findAll(Closure where)

### firstRow

    public Object firstRow()

  Returns the first row from a DataSet's underlying table
  throws:
    SQLException if a database error occurs
  Returns:
    Returns the first GroovyRowResult object from the dataset

### getParameters

    public List getParameters()

### getSql

    public String getSql()

### getSqlOrderByVisitor

    protected SqlOrderByVisitor getSqlOrderByVisitor()

### getSqlWhereVisitor

    protected SqlWhereVisitor getSqlWhereVisitor()

### reverse

    public DataSet reverse()

### rollback

    @Override
    public void rollback()

### rows

    public List rows()

  Returns a List of all of the rows from the table a DataSet represents
  throws:
    SQLException if a database error occurs
  Returns:
    Returns a list of GroovyRowResult objects from the dataset

### sort

    public DataSet sort(Closure sort)

### withTransaction

    @Override
    public void withTransaction(Closure closure)

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