org.apache.solr.client.solrj.io.stream

类 JDBCStream

java.lang.Object

org.apache.solr.client.solrj.io.stream.TupleStream

org.apache.solr.client.solrj.io.stream.JDBCStream

所有已实现的接口:

Closeable, Serializable, AutoCloseable, Expressible, MapSerializable, MapWriter, NavigableObject

public class JDBCStream
extends TupleStream
implements Expressible

Connects to a datasource using a registered JDBC driver and execute a query. The results of that query will be returned as tuples. An EOF tuple will indicate that all have been read. Supported Datatypes for most types vary by JDBC driver based on the specific java type as reported by ResultSetMetaData.getColumnClassName(int). The exception are Types.DATE, Types.TIME or Types.TIMESTAMP which are determined by the JDBC type.

Java or JDBC Type	Tuple Type	Notes
Boolean	Boolean
String	String
Short, Integer, Long	Long
Float, Double	Double
Clob and subclasses	String	Clobs up to length 231-1 are supported.
Other subclasses of Number	Long, Double	Tuple Type based on BigDecimal.scale().
JDBC Types.DATE	String	yyyy-MM-dd, calls Date.toString()
JDBC Types.TIME	String	hh:mm:ss, calls Time.toString()
JDBC Types.TIMESTAMP	String	See DateTimeFormatter.ISO_INSTANT

从以下版本开始:

6.0.0

另请参阅:

序列化表格

嵌套类概要

嵌套类

限定符和类型	类和说明
static interface	JDBCStream.ResultSetValueSelector

从类继承的嵌套类/接口 org.apache.solr.client.solrj.io.stream.TupleStream

TupleStream.IgnoreException

从接口继承的嵌套类/接口 org.apache.solr.common.MapWriter

MapWriter.EntryWriter

字段概要

字段

限定符和类型	字段和说明
protected ResultSet	resultSet
protected String	sep
protected StreamContext	streamContext

构造器概要

构造器

构造器和说明
JDBCStream(StreamExpression expression, StreamFactory factory)
JDBCStream(String connectionUrl, String sqlQuery, StreamComparator definedSort)
JDBCStream(String connectionUrl, String sqlQuery, StreamComparator definedSort, Properties connectionProperties, String driverClassName)

方法概要

限定符和类型	方法和说明
List<TupleStream>	children()
void	close() Closes the JDBCStream
protected JDBCStream.ResultSetValueSelector	determineValueSelector(int columnIdx, ResultSetMetaData metadata)
StreamComparator	getStreamSort()
void	open() Opens the JDBCStream
Tuple	read()
void	setStreamContext(StreamContext context)
Explanation	toExplanation(StreamFactory factory) Returns an explanation about the stream object
StreamExpressionParameter	toExpression(StreamFactory factory)

从类继承的方法 org.apache.solr.client.solrj.io.stream.TupleStream

getCost, getShards, getShards, getStreamNodeId, writeMap

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

从接口继承的方法 org.apache.solr.common.MapWriter

jsonStr, toMap

从接口继承的方法 org.apache.solr.common.NavigableObject

_forEachEntry, _forEachEntry, _forEachEntry, _get, _get, _getStr, _getStr, _size

字段详细资料

resultSet

protected ResultSet resultSet

streamContext

protected transient StreamContext streamContext

sep

protected String sep

构造器详细资料

JDBCStream

public JDBCStream(String connectionUrl,
                  String sqlQuery,
                  StreamComparator definedSort)
           throws IOException

抛出:

IOException

JDBCStream

public JDBCStream(String connectionUrl,
                  String sqlQuery,
                  StreamComparator definedSort,
                  Properties connectionProperties,
                  String driverClassName)
           throws IOException

抛出:

IOException

JDBCStream

public JDBCStream(StreamExpression expression,
                  StreamFactory factory)
           throws IOException

抛出:

IOException

方法详细资料

setStreamContext

public void setStreamContext(StreamContext context)

指定者:

setStreamContext 在类中 TupleStream

open

public void open()
          throws IOException

Opens the JDBCStream

指定者:

open 在类中 TupleStream

抛出:

IOException

determineValueSelector

protected JDBCStream.ResultSetValueSelector determineValueSelector(int columnIdx,
                                                                   ResultSetMetaData metadata)
                                                            throws SQLException

抛出:

SQLException

close

public void close()
           throws IOException

Closes the JDBCStream

指定者:

close 在接口中 Closeable

指定者:

close 在接口中 AutoCloseable

指定者:

close 在类中 TupleStream

抛出:

IOException

read

public Tuple read()
           throws IOException

指定者:

read 在类中 TupleStream

抛出:

IOException

toExpression

public StreamExpressionParameter toExpression(StreamFactory factory)
                                       throws IOException

指定者:

toExpression 在接口中 Expressible

抛出:

IOException

toExplanation

public Explanation toExplanation(StreamFactory factory)
                          throws IOException

从接口复制的说明: Expressible

Returns an explanation about the stream object

指定者:

toExplanation 在接口中 Expressible

指定者:

toExplanation 在类中 TupleStream

参数:

factory - Stream factory for this, contains information about the function name

返回:

Explanation about this stream object containing explanations of any child stream objects

抛出:

IOException - throw on any error

children

public List<TupleStream> children()

指定者:

children 在类中 TupleStream

getStreamSort

public StreamComparator getStreamSort()

指定者:

getStreamSort 在类中 TupleStream