org.openstreetmap.osmosis.core.mysql.v0_5.impl
Class EntityTagHistoryReader

java.lang.Object
  extended by org.openstreetmap.osmosis.core.mysql.common.BaseTableReader<EntityHistory<DBEntityTag>>
      extended by org.openstreetmap.osmosis.core.mysql.v0_5.impl.EntityTagHistoryReader
All Implemented Interfaces:
java.util.Iterator<EntityHistory<DBEntityTag>>, Releasable, ReleasableIterator<EntityHistory<DBEntityTag>>

public class EntityTagHistoryReader
extends BaseTableReader<EntityHistory<DBEntityTag>>

Reads the most recent set of tags from a database for entities that have been modified within a time interval.

Author:
Brett Henderson

Nested Class Summary
 
Nested classes/interfaces inherited from class org.openstreetmap.osmosis.core.mysql.common.BaseTableReader
BaseTableReader.ReadResult<T>
 
Constructor Summary
EntityTagHistoryReader(DatabaseLoginCredentials loginCredentials, java.lang.String parentTableName, java.lang.String tagTableName, java.util.Date intervalBegin, java.util.Date intervalEnd)
          Creates a new instance.
 
Method Summary
protected  BaseTableReader.ReadResult<EntityHistory<DBEntityTag>> createNextValue(java.sql.ResultSet resultSet)
          Builds an entity object from the current recordset row.
protected  java.sql.ResultSet createResultSet(DatabaseContext queryDbCtx)
          Builds the result set that the reader will iterate over.
 
Methods inherited from class org.openstreetmap.osmosis.core.mysql.common.BaseTableReader
createLastValue, hasNext, next, release, remove
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

EntityTagHistoryReader

public EntityTagHistoryReader(DatabaseLoginCredentials loginCredentials,
                              java.lang.String parentTableName,
                              java.lang.String tagTableName,
                              java.util.Date intervalBegin,
                              java.util.Date intervalEnd)
Creates a new instance.

Parameters:
loginCredentials - Contains all information required to connect to the database.
parentTableName - The name of the table containing the parent entity.
tagTableName - The name of the table containing the entity tags.
intervalBegin - Marks the beginning (inclusive) of the time interval to be checked.
intervalEnd - Marks the end (exclusive) of the time interval to be checked.
Method Detail

createResultSet

protected java.sql.ResultSet createResultSet(DatabaseContext queryDbCtx)
Builds the result set that the reader will iterate over.

Specified by:
createResultSet in class BaseTableReader<EntityHistory<DBEntityTag>>
Parameters:
queryDbCtx - The database context to query against.
Returns:
A result set positioned before the first record.

createNextValue

protected BaseTableReader.ReadResult<EntityHistory<DBEntityTag>> createNextValue(java.sql.ResultSet resultSet)
Builds an entity object from the current recordset row.

Specified by:
createNextValue in class BaseTableReader<EntityHistory<DBEntityTag>>
Parameters:
resultSet - The record set to retrieve the data from.
Returns:
The result of the read.