/// <param name="split">The InputSplit to read data for</param>
/// <exception cref="Java.Sql.SQLException"></exception>
protected internal DBRecordReader(DBInputFormat <T> _enclosing, DBInputFormat.DBInputSplit
split, Type inputClass, JobConf job, Connection conn, DBConfiguration dbConfig,
string cond, string[] fields, string table)
: base(split, inputClass, job, conn, dbConfig, cond, fields, table)
{
this._enclosing = _enclosing;
}
/// <summary>test DBInputFormat class.</summary>
/// <remarks>test DBInputFormat class. Class should split result for chunks</remarks>
/// <exception cref="System.Exception"/>
public virtual void TestDBInputFormat()
{
JobConf configuration = new JobConf();
SetupDriver(configuration);
DBInputFormat <DBInputFormat.NullDBWritable> format = new DBInputFormat <DBInputFormat.NullDBWritable
>();
format.SetConf(configuration);
format.SetConf(configuration);
DBInputFormat.DBInputSplit splitter = new DBInputFormat.DBInputSplit(1, 10);
Reporter reporter = Org.Mockito.Mockito.Mock <Reporter>();
RecordReader <LongWritable, DBInputFormat.NullDBWritable> reader = format.GetRecordReader
(splitter, configuration, reporter);
configuration.SetInt(MRJobConfig.NumMaps, 3);
InputSplit[] lSplits = format.GetSplits(configuration, 3);
NUnit.Framework.Assert.AreEqual(5, lSplits[0].GetLength());
NUnit.Framework.Assert.AreEqual(3, lSplits.Length);
// test reader .Some simple tests
NUnit.Framework.Assert.AreEqual(typeof(LongWritable), reader.CreateKey().GetType(
));
NUnit.Framework.Assert.AreEqual(0, reader.GetPos());
NUnit.Framework.Assert.AreEqual(0, reader.GetProgress(), 0.001);
reader.Close();
}
/// <summary>The constructor is kept to be compatible with M/R 1.x</summary>
/// <param name="split">The InputSplit to read data for</param>
/// <exception cref="Java.Sql.SQLException"/>
protected internal DBRecordReader(DBInputFormat <T> _enclosing, DBInputFormat.DBInputSplit
split, Type inputClass, JobConf job)
: base(split, inputClass, job, this._enclosing.connection, this._enclosing.dbConf
, this._enclosing.conditions, this._enclosing.fieldNames, this._enclosing.tableName
)
{
this._enclosing = _enclosing;
}
/// <summary>test configuration for db.</summary>
/// <remarks>test configuration for db. should works DBConfiguration.* parameters.</remarks>
public virtual void TestSetInput()
{
JobConf configuration = new JobConf();
string[] fieldNames = new string[] { "field1", "field2" };
DBInputFormat.SetInput(configuration, typeof(DBInputFormat.NullDBWritable), "table"
, "conditions", "orderBy", fieldNames);
NUnit.Framework.Assert.AreEqual("org.apache.hadoop.mapred.lib.db.DBInputFormat$NullDBWritable"
, configuration.GetClass(DBConfiguration.InputClassProperty, null).FullName);
NUnit.Framework.Assert.AreEqual("table", configuration.Get(DBConfiguration.InputTableNameProperty
, null));
string[] fields = configuration.GetStrings(DBConfiguration.InputFieldNamesProperty
);
NUnit.Framework.Assert.AreEqual("field1", fields[0]);
NUnit.Framework.Assert.AreEqual("field2", fields[1]);
NUnit.Framework.Assert.AreEqual("conditions", configuration.Get(DBConfiguration.InputConditionsProperty
, null));
NUnit.Framework.Assert.AreEqual("orderBy", configuration.Get(DBConfiguration.InputOrderByProperty
, null));
configuration = new JobConf();
DBInputFormat.SetInput(configuration, typeof(DBInputFormat.NullDBWritable), "query"
, "countQuery");
NUnit.Framework.Assert.AreEqual("query", configuration.Get(DBConfiguration.InputQuery
, null));
NUnit.Framework.Assert.AreEqual("countQuery", configuration.Get(DBConfiguration.InputCountQuery
, null));
JobConf jConfiguration = new JobConf();
DBConfiguration.ConfigureDB(jConfiguration, "driverClass", "dbUrl", "user", "password"
);
NUnit.Framework.Assert.AreEqual("driverClass", jConfiguration.Get(DBConfiguration
.DriverClassProperty));
NUnit.Framework.Assert.AreEqual("dbUrl", jConfiguration.Get(DBConfiguration.UrlProperty
));
NUnit.Framework.Assert.AreEqual("user", jConfiguration.Get(DBConfiguration.UsernameProperty
));
NUnit.Framework.Assert.AreEqual("password", jConfiguration.Get(DBConfiguration.PasswordProperty
));
jConfiguration = new JobConf();
DBConfiguration.ConfigureDB(jConfiguration, "driverClass", "dbUrl");
NUnit.Framework.Assert.AreEqual("driverClass", jConfiguration.Get(DBConfiguration
.DriverClassProperty));
NUnit.Framework.Assert.AreEqual("dbUrl", jConfiguration.Get(DBConfiguration.UrlProperty
));
NUnit.Framework.Assert.IsNull(jConfiguration.Get(DBConfiguration.UsernameProperty
));
NUnit.Framework.Assert.IsNull(jConfiguration.Get(DBConfiguration.PasswordProperty
));
}