org.geotools.data.postgis

Class PostGISPSDialect

Object

SQLDialect

PreparedStatementSQLDialect

PostGISPSDialect

public class PostGISPSDialect
extends PreparedStatementSQLDialect

Field Summary

Fields inherited from class SQLDialect

BASE_DBMS_CAPABILITIES, dataStore, LOGGER

Constructor Summary

Constructors

Constructor and Description
PostGISPSDialect(JDBCDataStore store, PostGISDialect delegate)

Method Summary

Modifier and Type	Method and Description
void	applyLimitOffset(StringBuffer sql, int limit, int offset) Alters the query provided so that limit and offset are natively dealt with.
PreparedFilterToSQL	createPreparedFilterToSQL()
Envelope	decodeGeometryEnvelope(ResultSet rs, int column, Connection cx) Decodes the result of a spatial extent function in a SELECT statement.
Geometry	decodeGeometryValue(GeometryDescriptor descriptor, ResultSet rs, int column, GeometryFactory factory, Connection cx, Hints hints) Decodes a geometry value from the result of a query specifying the column as an index.
Geometry	decodeGeometryValue(GeometryDescriptor descriptor, ResultSet rs, String column, GeometryFactory factory, Connection cx, Hints hints) Decodes a geometry value from the result of a query.
void	encodeGeometryColumn(GeometryDescriptor gatt, String prefix, int srid, Hints hints, StringBuffer sql) Encodes the name of a geometry column in a SELECT statement.
void	encodeGeometryColumn(GeometryDescriptor gatt, String prefix, int srid, StringBuffer sql) Encodes the name of a geometry column in a SELECT statement.
void	encodeGeometryEnvelope(String tableName, String geometryColumn, StringBuffer sql) Encodes the spatial extent function of a geometry column in a SELECT statement.
String	encodeNextSequenceValue(String schemaName, String sequenceName) Encodes how to get the next sequence value from the DB.
void	encodePrimaryKey(String column, StringBuffer sql) Encodes the primary key definition in a CREATE TABLE statement.
protected String	getArrayComponentTypeName(AttributeDescriptor att) Given the full information about the attribute being transformed, figure out the native SQL Type Name to use when creating a SQL Array object· The default implementation just scans JDBCDataStore.getSqlTypeNameToClassMappings() backwards, and will fail in case there are ambiguities.
int	getGeometryDimension(String schemaName, String tableName, String columnName, Connection cx) Returns the dimension of the coordinates in the geometry.
Integer	getGeometrySRID(String schemaName, String tableName, String columnName, Connection cx) Returns the spatial reference system identifier (srid) for a particular geometry column.
String	getGeometryTypeName(Integer type) Returns the name of a geometric type based on its integer constant.
Object	getLastAutoGeneratedValue(String schemaName, String tableName, String columnName, Connection cx) Obtains the last value of an auto generated column.
Class<?>	getMapping(ResultSet columnMetaData, Connection cx) Determines the class mapping for a particular column of a table.
Object	getNextAutoGeneratedValue(String schemaName, String tableName, String columnName, Connection cx) Obtains the next value of an auto generated column.
Object	getNextSequenceValue(String schemaName, String sequenceName, Connection cx) Obtains the next value of a sequence, incrementing the sequence to the next state in the process.
String	getSequenceForColumn(String schemaName, String tableName, String columnName, Connection cx) Determines the name of the sequence (if any) which is used to increment generate values for a table column.
void	handleUserDefinedType(ResultSet columnMetaData, ColumnMetadata metadata, Connection cx) Handles the mapping for a user defined type.
boolean	includeTable(String schemaName, String tableName, Connection cx) Determines if the specified table should be included in those published by the datastore.
boolean	isAggregatedSortSupported(String function) Returns true if this dialect supports sorting together with the given aggregation function.
boolean	isEncodeBBOXFilterAsEnvelope()
boolean	isFunctionEncodingEnabled()
boolean	isLimitOffsetSupported() Returns true if this dialect can encode both Query.getStartIndex() and Query.getMaxFeatures() into native SQL.
boolean	isLooseBBOXEnabled()
boolean	lookupGeneratedValuesPostInsert() Controls whether keys are looked up post or pre insert.
void	postCreateTable(String schemaName, SimpleFeatureType featureType, Connection cx) Callback to execute any additional sql statements post a create table statement.
void	postDropTable(String schemaName, SimpleFeatureType featureType, Connection cx) Callback which executes after a table has been dropped.
void	preDropTable(String schemaName, SimpleFeatureType featureType, Connection cx) Callback which executes before a table is about to be dropped.
void	prepareGeometryValue(Class<? extends Geometry> gClass, int dimension, int srid, Class binding, StringBuffer sql) Prepares the geometry value for a prepared statement.
void	registerClassToSqlMappings(Map<Class<?>,Integer> mappings) Registers the java type to sql type mappings that the datastore uses when reading and writing objects to and from the database. * Subclasses should extend (not override) this method to provide additional mappings, or to override mappings provided by this implementation.
void	registerSqlTypeNameToClassMappings(Map<String,Class<?>> mappings) Registers the sql type name to java type mappings that the dialect uses when reading and writing objects to and from the database.
void	registerSqlTypeToSqlTypeNameOverrides(Map<Integer,String> overrides) Registers any overrides that should occur when mapping an integer sql type value to an underlying sql type name.
void	setEncodeBBOXFilterAsEnvelope(boolean encodeBBOXFilterAsEnvelope)
void	setFunctionEncodingEnabled(boolean functionEncodingEnabled)
void	setGeometryValue(Geometry g, int dimension, int srid, Class binding, PreparedStatement ps, int column) Sets the geometry value into the prepared statement.
void	setLooseBBOXEnabled(boolean looseBBOXEnabled)

Methods inherited from class PreparedStatementSQLDialect

convert, convertArrayElement, convertToArray, onDelete, onInsert, onSelect, onUpdate, prepareFunctionArgument, prepareGeometryValue, setArrayValue, setValue

Methods inherited from class SQLDialect

addSupportedHints, createCRS, createIndex, dropIndex, encodeAggregateFunction, encodeAggregateFunctionPostfix, encodeAggregateFunctionPrefix, encodeColumnAlias, encodeColumnName, encodeColumnName, encodeColumnType, encodeCreateTable, encodeGeometryColumn, encodeGeometryColumnGeneralized, encodeGeometryColumnGeneralized, encodeGeometryColumnSimplified, encodeGeometryColumnSimplified, encodeJoin, encodePostColumnCreateTable, encodePostCreateTable, encodePostSelect, encodeSchemaName, encodeTableAlias, encodeTableName, getDefaultVarcharSize, getDesiredTablesType, getIndexes, getLastAutoGeneratedValue, getNameEscape, getOptimizedBounds, getPkColumnValue, getPrimaryKey, handleSelectHints, initializeConnection, isAutoCommitQuery, isGroupBySupported, ne, postCreateAttribute, postCreateFeatureType, registerAggregateFunctions, registerFunctions, registerSqlTypeToClassMappings, splitFilter, supportsSchemaForIndex

Methods inherited from class Object

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

Constructor Detail

PostGISPSDialect

public PostGISPSDialect(JDBCDataStore store,
                        PostGISDialect delegate)

Method Detail

isAggregatedSortSupported

public boolean isAggregatedSortSupported(String function)

Description copied from class: SQLDialect

Returns true if this dialect supports sorting together with the given aggregation function.

Overrides:

isAggregatedSortSupported in class SQLDialect

Returns:

includeTable

public boolean includeTable(String schemaName,
                            String tableName,
                            Connection cx)
                     throws SQLException

Description copied from class: SQLDialect

Determines if the specified table should be included in those published by the datastore.

This method returns true if the table should be published as a feature type, otherwise it returns false. Subclasses should override this method, this default implementation returns true.

A database connection is provided to the dialect but it should not be closed. However any statements objects or result sets that are instantiated from it must be closed.

Overrides:

includeTable in class SQLDialect

Parameters:

schemaName - The schema of the table, might be null..

tableName - The name of the table.

cx - Database connection.

Throws:

SQLException

decodeGeometryEnvelope

public Envelope decodeGeometryEnvelope(ResultSet rs,
                                       int column,
                                       Connection cx)
                                throws SQLException,
                                       IOException

Description copied from class: SQLDialect

Decodes the result of a spatial extent function in a SELECT statement.

This method is given direct access to a result set. The column parameter is the index into the result set which contains the spatial extent value. The query for this value is build with the SQLDialect.encodeGeometryEnvelope(String, String, StringBuffer) method.

This method must not read any other objects from the result set other then the one referenced by column.

Specified by:

decodeGeometryEnvelope in class SQLDialect

Parameters:

rs - A result set

column - Index into the result set which points at the spatial extent value.

Throws:

SQLException

IOException

decodeGeometryValue

public Geometry decodeGeometryValue(GeometryDescriptor descriptor,
                                    ResultSet rs,
                                    int column,
                                    GeometryFactory factory,
                                    Connection cx,
                                    Hints hints)
                             throws IOException,
                                    SQLException

Description copied from class: SQLDialect

Decodes a geometry value from the result of a query specifying the column as an index.

See #decodeGeometryValue(GeometryDescriptor, ResultSet, String, GeometryFactory) for a more in depth description.

Overrides:

decodeGeometryValue in class SQLDialect

Throws:

IOException

SQLException

See Also:

#decodeGeometryValue(GeometryDescriptor, ResultSet, String, GeometryFactory)}.

decodeGeometryValue

public Geometry decodeGeometryValue(GeometryDescriptor descriptor,
                                    ResultSet rs,
                                    String column,
                                    GeometryFactory factory,
                                    Connection cx,
                                    Hints hints)
                             throws IOException,
                                    SQLException

Description copied from class: SQLDialect

Decodes a geometry value from the result of a query.

This method is given direct access to a result set. The column parameter is the index into the result set which contains the geometric value.

An implementation should deserialize the value provided by the result set into Geometry object. For example, consider an implementation which deserializes from well known text:

   String wkt = rs.getString( column );
   if ( wkt == null ) {
     return null;
   }
   return new WKTReader(factory).read( wkt );
   

Note that implementations must handle null values.

The factory parameter should be used to instantiate any geometry objects.

Specified by:

decodeGeometryValue in class SQLDialect

Throws:

IOException

SQLException

encodeGeometryColumn

public void encodeGeometryColumn(GeometryDescriptor gatt,
                                 String prefix,
                                 int srid,
                                 StringBuffer sql)

Description copied from class: SQLDialect

Encodes the name of a geometry column in a SELECT statement.

This method should wrap the column name in any functions that are used to retrieve its value. For instance, often it is necessary to use the function asText, or asWKB when fetching a geometry.

This method must also be sure to properly encode the name of the column with the SQLDialect.encodeColumnName(String, String, StringBuffer) function.

Example:

   
   sql.append( "asText(" );
   column( gatt.getLocalName(), sql );
   sql.append( ")" );
   
 

This default implementation simply uses the column name without any wrapping function, subclasses must override.

Overrides:

encodeGeometryColumn in class SQLDialect

encodeGeometryColumn

public void encodeGeometryColumn(GeometryDescriptor gatt,
                                 String prefix,
                                 int srid,
                                 Hints hints,
                                 StringBuffer sql)

Description copied from class: SQLDialect

Encodes the name of a geometry column in a SELECT statement.

This method should wrap the column name in any functions that are used to retrieve its value. For instance, often it is necessary to use the function asText, or asWKB when fetching a geometry.

This method must also be sure to properly encode the name of the column with the SQLDialect.encodeColumnName(String, String, StringBuffer) function.

Example:

   
   sql.append( "asText(" );
   column( gatt.getLocalName(), sql );
   sql.append( ")" );
   
 

This default implementation calls the deprecated SQLDialect.encodeGeometryColumn(GeometryDescriptor, String, int, StringBuffer) version of this method for backward compatibility reasons.

Overrides:

encodeGeometryColumn in class SQLDialect

encodeGeometryEnvelope

public void encodeGeometryEnvelope(String tableName,
                                   String geometryColumn,
                                   StringBuffer sql)

Description copied from class: SQLDialect

Encodes the spatial extent function of a geometry column in a SELECT statement.

This method must also be sure to properly encode the name of the column with the SQLDialect.encodeColumnName(String, StringBuffer) function.

Specified by:

encodeGeometryEnvelope in class SQLDialect

encodePrimaryKey

public void encodePrimaryKey(String column,
                             StringBuffer sql)

Description copied from class: SQLDialect

Encodes the primary key definition in a CREATE TABLE statement.

Subclasses should override this method if need be, the default implementation does the following:

   
   encodeColumnName( column, sql );
   sql.append( " int PRIMARY KEY" );
   
 

Overrides:

encodePrimaryKey in class SQLDialect

getGeometrySRID

public Integer getGeometrySRID(String schemaName,
                               String tableName,
                               String columnName,
                               Connection cx)
                        throws SQLException

Description copied from class: SQLDialect

Returns the spatial reference system identifier (srid) for a particular geometry column.

This method is given a direct connection to the database. The connection must not be closed. However any statements or result sets instantiated from the connection must be closed.

In the event that the srid cannot be determined, this method should return null .

Overrides:

getGeometrySRID in class SQLDialect

Parameters:

schemaName - The database schema, could be null.

tableName - The table, never null.

columnName - The column name, never null

cx - The database connection.

Throws:

SQLException

getGeometryTypeName

public String getGeometryTypeName(Integer type)

Description copied from class: SQLDialect

Returns the name of a geometric type based on its integer constant.

The constant, type, is registered in SQLDialect.registerSqlTypeNameToClassMappings(Map).

This default implementation returns null, subclasses should override.

Overrides:

getGeometryTypeName in class SQLDialect

getMapping

public Class<?> getMapping(ResultSet columnMetaData,
                           Connection cx)
                    throws SQLException

Description copied from class: SQLDialect

Determines the class mapping for a particular column of a table.

Implementing this method is optional. It is used to allow database to perform custom type mappings based on various column metadata. It is called before the mappings registered in SQLDialect.registerSqlTypeToClassMappings(Map) and #registerSqlTypeNameToClassMappings(Map) are used to determine the mapping. Subclasses should implement as needed, this default implementation returns null.

The columnMetaData argument is provided from {@link DatabaseMetaData#getColumns(String, String, String, String)}.

Overrides:

getMapping in class SQLDialect

Parameters:

columnMetaData - The column metadata

Returns:

The class mapped to the to column, or null.

Throws:

SQLException

lookupGeneratedValuesPostInsert

public boolean lookupGeneratedValuesPostInsert()

Description copied from class: SQLDialect

Controls whether keys are looked up post or pre insert.

When a row is inserted into a table, and a key is automatically generated it can be looked up before the insert occurs, or after the insert has been made. Returning false will cause the lookup to occur before the insert via SQLDialect.getNextAutoGeneratedValue(String, String, String, Connection). Returning true will cause the lookup to occur after the insert via SQLDialect.getLastAutoGeneratedValue(String, String, String, Connection).

Subclasses returning false should implement:

• SQLDialect.getNextAutoGeneratedValue(String, String, String, Connection)

Subclasses returning true should implement:

• SQLDialect.getLastAutoGeneratedValue(String, String, String, Connection)

Overrides:

lookupGeneratedValuesPostInsert in class SQLDialect

getNextAutoGeneratedValue

public Object getNextAutoGeneratedValue(String schemaName,
                                        String tableName,
                                        String columnName,
                                        Connection cx)
                                 throws SQLException

Description copied from class: SQLDialect

Obtains the next value of an auto generated column.

Implementations should determine the next value of a column for which values are automatically generated by the database.

This method is given a direct connection to the database, but this connection should never be closed. However any statements or result sets instantiated from the connection must be closed.

Implementations should handle the case where schemaName is null.

Overrides:

getNextAutoGeneratedValue in class SQLDialect

Parameters:

schemaName - The schema name, this might be null.

tableName - The name of the table.

columnName - The column.

cx - The database connection.

Returns:

The next value of the column, or null.

Throws:

SQLException

getLastAutoGeneratedValue

public Object getLastAutoGeneratedValue(String schemaName,
                                        String tableName,
                                        String columnName,
                                        Connection cx)
                                 throws SQLException

Description copied from class: SQLDialect

Obtains the last value of an auto generated column.

This method is only called when SQLDialect.lookupGeneratedValuesPostInsert() returns true. Implementations should determine the previous value of a column for which was automatically generated by the database.

This method is given a direct connection to the database, but this connection should never be closed. However any statements or result sets instantiated from the connection must be closed.

Implementations should handle the case where schemaName is null.

Overrides:

getLastAutoGeneratedValue in class SQLDialect

Parameters:

schemaName - The schema name, this might be null.

tableName - The name of the table.

columnName - The column.

cx - The database connection.

Returns:

The previous value of the column, or null.

Throws:

SQLException

getNextSequenceValue

public Object getNextSequenceValue(String schemaName,
                                   String sequenceName,
                                   Connection cx)
                            throws SQLException

Description copied from class: SQLDialect

Obtains the next value of a sequence, incrementing the sequence to the next state in the process.

Implementations should determine the next value of a column for which values are automatically generated by the database.

This method is given a direct connection to the database, but this connection should never be closed. However any statements or result sets instantiated from the connection must be closed.

Implementations should handle the case where schemaName is null.

Overrides:

getNextSequenceValue in class SQLDialect

Parameters:

schemaName - The schema name, this might be null.

sequenceName - The name of the sequence.

cx - The database connection.

Returns:

The next value of the sequence, or null.

Throws:

SQLException

encodeNextSequenceValue

public String encodeNextSequenceValue(String schemaName,
                                      String sequenceName)

Description copied from class: SQLDialect

Encodes how to get the next sequence value from the DB.

Implementations should handle the case where schemaName is null.

Overrides:

encodeNextSequenceValue in class SQLDialect

getSequenceForColumn

public String getSequenceForColumn(String schemaName,
                                   String tableName,
                                   String columnName,
                                   Connection cx)
                            throws SQLException

Description copied from class: SQLDialect

Determines the name of the sequence (if any) which is used to increment generate values for a table column.

This method should return null if no such sequence exists.

This method is given a direct connection to the database, but this connection should never be closed. However any statements or result sets instantiated from the connection must be closed.

Overrides:

getSequenceForColumn in class SQLDialect

Parameters:

schemaName - The schema name, this might be null.

tableName - The table name.

columnName - The column name.

cx - The database connection.

Throws:

SQLException

isLooseBBOXEnabled

public boolean isLooseBBOXEnabled()

postCreateTable

public void postCreateTable(String schemaName,
                            SimpleFeatureType featureType,
                            Connection cx)
                     throws SQLException

Description copied from class: SQLDialect

Callback to execute any additional sql statements post a create table statement.

This method should be implemented by subclasses that need to do some post processing on the database after a table has been created. Examples might include:

• Creating a sequence for a primary key
• Registering geometry column metadata
• Creating a spatial index

A common case is creating an auto incrementing sequence for the primary key of a table. It should be noted that all tables created through the datastore use the column "fid" as the primary key.

A direct connection to the database is provided (cx). This connection must not be closed, however any statements or result sets instantiated from the connection must be closed.

Overrides:

postCreateTable in class SQLDialect

Parameters:

schemaName - The name of the schema, may be null.

featureType - The feature type that has just been created on the database.

cx - Database connection.

Throws:

SQLException

preDropTable

public void preDropTable(String schemaName,
                         SimpleFeatureType featureType,
                         Connection cx)
                  throws SQLException

Description copied from class: SQLDialect

Callback which executes before a table is about to be dropped.

This base implementation does nothing, subclasses should override as need be.

Overrides:

preDropTable in class SQLDialect

Parameters:

schemaName - The database schema containing the table.

featureType - The featureType/table being dropped.

cx - The database connection.

Throws:

SQLException

postDropTable

public void postDropTable(String schemaName,
                          SimpleFeatureType featureType,
                          Connection cx)
                   throws SQLException

Description copied from class: SQLDialect

Callback which executes after a table has been dropped.

This base implementation does nothing, subclasses should override as need be.

Overrides:

postDropTable in class SQLDialect

Parameters:

schemaName - The database schema containing the table.

featureType - The featureType/table being dropped.

cx - The database connection.

Throws:

SQLException

registerClassToSqlMappings

public void registerClassToSqlMappings(Map<Class<?>,Integer> mappings)

Description copied from class: SQLDialect

Registers the java type to sql type mappings that the datastore uses when reading and writing objects to and from the database. *

Subclasses should extend (not override) this method to provide additional mappings, or to override mappings provided by this implementation. This implementation provides the following mappings:

Overrides:

registerClassToSqlMappings in class SQLDialect

registerSqlTypeNameToClassMappings

public void registerSqlTypeNameToClassMappings(Map<String,Class<?>> mappings)

Description copied from class: SQLDialect

Registers the sql type name to java type mappings that the dialect uses when reading and writing objects to and from the database.

Subclasses should extend (not override) this method to provide additional mappings, or to override mappings provided by this implementation. This implementation provides the following mappings:

Overrides:

registerSqlTypeNameToClassMappings in class SQLDialect

registerSqlTypeToSqlTypeNameOverrides

public void registerSqlTypeToSqlTypeNameOverrides(Map<Integer,String> overrides)

Description copied from class: SQLDialect

Registers any overrides that should occur when mapping an integer sql type value to an underlying sql type name.

The default implementation of this method does nothing. Subclasses should override in cases where:

• database type metadata does not provide enough information to properly map
• to support custom types (those not in Types)

Overrides:

registerSqlTypeToSqlTypeNameOverrides in class SQLDialect

handleUserDefinedType

public void handleUserDefinedType(ResultSet columnMetaData,
                                  ColumnMetadata metadata,
                                  Connection cx)
                           throws SQLException

Description copied from class: SQLDialect

Handles the mapping for a user defined type.

This method is called after SQLDialect.getMapping(ResultSet, Connection) but before the rest of the type mapping heuristics are applied.

Implementing this method is optional. It is used to allow for handling user defined types or "DOMAINS". Dialects that implement this method should set the appropriate information on the metadata object to allow the column to be mapped via teh regular type mapping heuristics.

Overrides:

handleUserDefinedType in class SQLDialect

Parameters:

columnMetaData - The column metdata.

metadata - The column metadata object that collections mapping information.

cx - The database connection, not to be closed.

Throws:

SQLException

setLooseBBOXEnabled

public void setLooseBBOXEnabled(boolean looseBBOXEnabled)

isEncodeBBOXFilterAsEnvelope

public boolean isEncodeBBOXFilterAsEnvelope()

setEncodeBBOXFilterAsEnvelope

public void setEncodeBBOXFilterAsEnvelope(boolean encodeBBOXFilterAsEnvelope)

prepareGeometryValue

public void prepareGeometryValue(Class<? extends Geometry> gClass,
                                 int dimension,
                                 int srid,
                                 Class binding,
                                 StringBuffer sql)

Description copied from class: PreparedStatementSQLDialect

Prepares the geometry value for a prepared statement.

This method should be overridden if the implementation needs to wrap the geometry placeholder in the function. The default implementationg just appends the default placeholder: '?'.

Overrides:

prepareGeometryValue in class PreparedStatementSQLDialect

Parameters:

gClass - The geometry class.

dimension - The dimensions (2,3,4) of the coordinates, or -1 if unknown

srid - The spatial reference system of the geometry, or -1 if unknown

binding - The class of the geometry.

sql - The prepared sql statement buffer.

setGeometryValue

public void setGeometryValue(Geometry g,
                             int dimension,
                             int srid,
                             Class binding,
                             PreparedStatement ps,
                             int column)
                      throws SQLException

Description copied from class: PreparedStatementSQLDialect

Sets the geometry value into the prepared statement.

Specified by:

setGeometryValue in class PreparedStatementSQLDialect

Parameters:

g - The geometry

srid - the geometry native srid (should be forced into the encoded geometry)

binding - the geometry type

ps - the prepared statement

column - the column index where the geometry is to be set

Throws:

SQLException

createPreparedFilterToSQL

public PreparedFilterToSQL createPreparedFilterToSQL()

Overrides:

createPreparedFilterToSQL in class PreparedStatementSQLDialect

isLimitOffsetSupported

public boolean isLimitOffsetSupported()

Description copied from class: SQLDialect

Returns true if this dialect can encode both Query.getStartIndex() and Query.getMaxFeatures() into native SQL.

Overrides:

isLimitOffsetSupported in class SQLDialect

Returns:

applyLimitOffset

public void applyLimitOffset(StringBuffer sql,
                             int limit,
                             int offset)

Description copied from class: SQLDialect

Alters the query provided so that limit and offset are natively dealt with. This might mean simply appending some extra directive to the query, or wrapping it into a bigger one.

Overrides:

applyLimitOffset in class SQLDialect

getGeometryDimension

public int getGeometryDimension(String schemaName,
                                String tableName,
                                String columnName,
                                Connection cx)
                         throws SQLException

Description copied from class: SQLDialect

Returns the dimension of the coordinates in the geometry. Defaults to 2, subclasses can override it.

This method is given a direct connection to the database. The connection must not be closed. However any statements or result sets instantiated from the connection must be closed.

In the event that the dimension cannot be determined, this method should return 2

Overrides:

getGeometryDimension in class SQLDialect

Parameters:

schemaName - The database schema, could be null.

tableName - The table, never null.

columnName - The column name, never null

cx - The database connection.

Throws:

SQLException

isFunctionEncodingEnabled

public boolean isFunctionEncodingEnabled()

setFunctionEncodingEnabled

public void setFunctionEncodingEnabled(boolean functionEncodingEnabled)

getArrayComponentTypeName

protected String getArrayComponentTypeName(AttributeDescriptor att)
                                    throws SQLException

Description copied from class: PreparedStatementSQLDialect

Given the full information about the attribute being transformed, figure out the native SQL Type Name to use when creating a SQL Array object· The default implementation just scans JDBCDataStore.getSqlTypeNameToClassMappings() backwards, and will fail in case there are ambiguities. Subclasses can implement their own logic and eventually use information contained in the attribute's PropertyDescriptor.getUserData(), stored at attribute creation time.

Overrides:

getArrayComponentTypeName in class PreparedStatementSQLDialect

Returns:

Throws:

SQLException