deegree 2.5 (2011/06/29 09:44 build-8-official)

org.deegree.io.datastore.sde
Class AbstractSDERequestHandler

java.lang.Object
  extended by org.deegree.io.datastore.sde.AbstractSDERequestHandler
Direct Known Subclasses:
SDEDeleteHandler, SDEInsertHandler, SDEQueryHandler, SDETransaction, SDEUpdateHandler

public class AbstractSDERequestHandler
extends java.lang.Object

Handles Transaction requests to SQL based datastores.

Version:
$Revision: 12183 $, $Date: 2008-06-05 11:17:23 +0200 (Do, 05 Jun 2008) $
Author:
Christoph Pollmann, last edited by: $Author: rbezema $

Field Summary
protected  TableAliasGenerator aliasGenerator
          reference to the alias generator
protected  SDEConnection conn
          a connection
protected  SDEDatastore datastore
          datastore to operate upon
protected static java.lang.String FT_COLUMN
          feature type column
protected static java.lang.String FT_PREFIX
          The prefix of feature types 'ft_'
 
Constructor Summary
AbstractSDERequestHandler(SDEDatastore datastore, TableAliasGenerator aliasGenerator, SDEConnection conn)
          Creates a new instance of AbstractSDERequestHandler from the given parameters.
 
Method Summary
protected  java.util.Map<java.lang.String,java.util.List<MappingField>> buildColumnsMap(MappedFeatureType featureType, PropertyType[] requestedProperties, boolean withIdFields)
          Builds a helper map that contains the column names of the feature type's table as keys.
protected  com.esri.sde.sdk.client.SeQuery buildInitialFIDSelect(MappedFeatureType rootFeatureType, SDEWhereBuilder whereBuilder)
          Builds the initial SELECT statement that retrieves the feature ids that are matched by the given WhereBuilder.
protected  java.util.Map<MappingField,java.lang.Integer> buildMappingFieldMap(java.lang.String[] columns, java.util.Map<java.lang.String,java.util.List<MappingField>> columnsMap)
          Builds a lookup map that contains MappingField instances as keys.
 FeatureId[] determineAffectedFIDs(MappedFeatureType ft, Filter filter)
          Determines the feature ids that are matched by the given filter.
 FeatureId[] extractFeatureIds(com.esri.sde.sdk.client.SeQuery stmt, MappedFeatureType ft)
           
 TableAliasGenerator getAliasGenerator()
          Returns the underlying AbstractSQLDatastore.
 SDEConnection getConnection()
          Returns the underlying AbstractSQLDatastore.
 SDEDatastore getDatastore()
          Returns the underlying AbstractSQLDatastore.
protected  java.lang.String[] getFeatureIdColumns(MappedFeatureType featureType)
          Appends the alias qualified columns that make up the feature id to the given query.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

FT_COLUMN

protected static final java.lang.String FT_COLUMN
feature type column

See Also:
Constant Field Values

FT_PREFIX

protected static final java.lang.String FT_PREFIX
The prefix of feature types 'ft_'

See Also:
Constant Field Values

datastore

protected SDEDatastore datastore
datastore to operate upon


aliasGenerator

protected TableAliasGenerator aliasGenerator
reference to the alias generator


conn

protected SDEConnection conn
a connection

Constructor Detail

AbstractSDERequestHandler

public AbstractSDERequestHandler(SDEDatastore datastore,
                                 TableAliasGenerator aliasGenerator,
                                 SDEConnection conn)
Creates a new instance of AbstractSDERequestHandler from the given parameters.

Parameters:
datastore -
aliasGenerator -
conn -
Method Detail

getDatastore

public SDEDatastore getDatastore()
Returns the underlying AbstractSQLDatastore.

Returns:
the underlying AbstractSQLDatastore.

getConnection

public SDEConnection getConnection()
Returns the underlying AbstractSQLDatastore.

Returns:
the underlying AbstractSQLDatastore.

getAliasGenerator

public TableAliasGenerator getAliasGenerator()
Returns the underlying AbstractSQLDatastore.

Returns:
the underlying AbstractSQLDatastore.

determineAffectedFIDs

public FeatureId[] determineAffectedFIDs(MappedFeatureType ft,
                                         Filter filter)
                                  throws DatastoreException
Determines the feature ids that are matched by the given filter.

Parameters:
ft -
filter -
Returns:
the feature ids that are matched by the given filter.
Throws:
DatastoreException

buildInitialFIDSelect

protected com.esri.sde.sdk.client.SeQuery buildInitialFIDSelect(MappedFeatureType rootFeatureType,
                                                                SDEWhereBuilder whereBuilder)
Builds the initial SELECT statement that retrieves the feature ids that are matched by the given WhereBuilder.

The statement is structured like this:

Parameters:
rootFeatureType -
whereBuilder -
Returns:
the query

getFeatureIdColumns

protected java.lang.String[] getFeatureIdColumns(MappedFeatureType featureType)
Appends the alias qualified columns that make up the feature id to the given query.

Parameters:
featureType -
Returns:
the feature id columns

extractFeatureIds

public FeatureId[] extractFeatureIds(com.esri.sde.sdk.client.SeQuery stmt,
                                     MappedFeatureType ft)
                              throws java.lang.Exception
Parameters:
stmt -
ft -
Returns:
the ids
Throws:
java.lang.Exception

buildColumnsMap

protected java.util.Map<java.lang.String,java.util.List<MappingField>> buildColumnsMap(MappedFeatureType featureType,
                                                                                       PropertyType[] requestedProperties,
                                                                                       boolean withIdFields)
Builds a helper map that contains the column names of the feature type's table as keys. Each column name is mapped to a List containing the MappingField instances that refer to this column.

The following MappingField instances of the feature type's annotation are used to build the map:

Parameters:
featureType - feature type for which the map is built
requestedProperties - requested properties
withIdFields -
Returns:
key class: String (column names), value class: List (containing MappingField instances)

buildMappingFieldMap

protected java.util.Map<MappingField,java.lang.Integer> buildMappingFieldMap(java.lang.String[] columns,
                                                                             java.util.Map<java.lang.String,java.util.List<MappingField>> columnsMap)
Builds a lookup map that contains MappingField instances as keys. Each MappingField is mapped to the index position (an Integer) of the MappingField's field name in the given column array.

Parameters:
columns -
columnsMap -
Returns:
key class: MappingField, value class: Integer (index of field name in columns)

deegree 2.5 (2011/06/29 09:44 build-8-official)

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