org.openstreetmap.osmosis.core.pgsql.v0_5.impl
Class RelationTableReader

java.lang.Object
  extended by org.openstreetmap.osmosis.core.pgsql.common.BaseTableReader<Relation>
      extended by org.openstreetmap.osmosis.core.pgsql.v0_5.impl.RelationTableReader
All Implemented Interfaces:
java.util.Iterator<Relation>, Releasable, ReleasableIterator<Relation>

public class RelationTableReader
extends BaseTableReader<Relation>

Reads all relations from a database ordered by their identifier. These relations won't be populated with members and tags.

Author:
Brett Henderson

Nested Class Summary
 
Nested classes/interfaces inherited from class org.openstreetmap.osmosis.core.pgsql.common.BaseTableReader
BaseTableReader.ReadResult<T>
 
Constructor Summary
RelationTableReader(DatabaseContext dbCtx)
          Creates a new instance.
RelationTableReader(DatabaseContext dbCtx, java.lang.String constraintTable)
          Creates a new instance.
 
Method Summary
protected  BaseTableReader.ReadResult<Relation> 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.pgsql.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

RelationTableReader

public RelationTableReader(DatabaseContext dbCtx)
Creates a new instance.

Parameters:
dbCtx - The active connection to use for reading from the database.

RelationTableReader

public RelationTableReader(DatabaseContext dbCtx,
                           java.lang.String constraintTable)
Creates a new instance.

Parameters:
dbCtx - The active connection to use for reading from the database.
constraintTable - The table containing a column named id defining the list of entities to be returned.
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<Relation>
Parameters:
queryDbCtx - The database context to query against.
Returns:
A result set positioned before the first record.

createNextValue

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

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