Spatialite wraps the splite-android project enabling you to create databases with geo-spatial features and make queries using geo-spatial functions.
Spatialite is an enhancement of the SQLite database.
It has dedicated column data types for spatial features: Points, Polylines and Polygons, and various query functions that enable fast and efficient retrieval of spatial data from the database.
The official reference for version 3.0.0 of spatialite can be found here: http://www.gaia-gis.it/gaia-sins/spatialite-sql-3.0.0.html.
(The B4A spatialite library is based on version 3.0.1 of spatialite).
Spatialite
Comment: Spatialite is an SQLite extension for the Android platform.
Currently version 3.0.1 of Spatialite is wrapped by this library.
Spatialite is compiled using geos v3.3.6 and proj4 v4.8.0 patched.
Version: 1.10
Please note that i have only tested a small number of the library objects, if you find any bugs please post a bug report and i'll do my best to fix it.
The Spatialite.jar library file is over 14MBs in size so too large to attach to a forum post.
So you can find the library files here: http://b4a.martinpearman.co.uk/spatialite/ (Spatialite_library_files_v2.20.zip).
Also available at that link is SpatialiteGUI - a small Windows utility that will likely be very handy for you developers.
Martin.
Spatialite is an enhancement of the SQLite database.
It has dedicated column data types for spatial features: Points, Polylines and Polygons, and various query functions that enable fast and efficient retrieval of spatial data from the database.
The official reference for version 3.0.0 of spatialite can be found here: http://www.gaia-gis.it/gaia-sins/spatialite-sql-3.0.0.html.
(The B4A spatialite library is based on version 3.0.1 of spatialite).
Spatialite
Comment: Spatialite is an SQLite extension for the Android platform.
Currently version 3.0.1 of Spatialite is wrapped by this library.
Spatialite is compiled using geos v3.3.6 and proj4 v4.8.0 patched.
Version: 1.10
- Spatialite_Blob
Methods:- Close
- IsInitialized As Boolean
- Properties:
- InputStream As InputStreamWrapper [read only]
Return InputStream for this blob. - OutputStream As OutputStreamWrapper [read only]
Return OutputStream for this blob.
- InputStream As InputStreamWrapper [read only]
- Spatialite_Callback
Events:- Columns (ColumnData() As String)
- NewRow (RowData() As String) As Boolean
- Types (TypeData() As String)
- Methods:
- Initialize (EventName As String)
- IsInitialized As Boolean
- Spatialite_Constants
Fields:- SQLITE_OPEN_AUTOPROXY As Int
- SQLITE_OPEN_CREATE As Int
- SQLITE_OPEN_DELETEONCLOSE As Int
- SQLITE_OPEN_EXCLUSIVE As Int
- SQLITE_OPEN_FULLMUTEX As Int
- SQLITE_OPEN_MAIN_DB As Int
- SQLITE_OPEN_MAIN_JOURNAL As Int
- SQLITE_OPEN_MASTER_JOURNAL As Int
- SQLITE_OPEN_NOMUTEX As Int
- SQLITE_OPEN_PRIVATECACHE As Int
- SQLITE_OPEN_READONLY As Int
- SQLITE_OPEN_READWRITE As Int
- SQLITE_OPEN_SHAREDCACHE As Int
- SQLITE_OPEN_SUBJOURNAL As Int
- SQLITE_OPEN_TEMP_DB As Int
- SQLITE_OPEN_TEMP_JOURNAL As Int
- SQLITE_OPEN_TRANSIENT_DB As Int
- SQLITE_OPEN_URI As Int
- SQLITE_OPEN_WAL As Int
- Spatialite_Database
Methods:- BusyTimeout (Milliseconds As Int)
Set the timeout for waiting for an SQLite table to become unlocked. - Close
Close the SpatiaLite database file. - CreateAggregate (FunctionName As String, NumberArgs As Int, Function1 As Function)
Create aggregate user defined function. - CreateFunction (FunctionName As String, NumberArgs As Int, Function1 As Function)
Create regular user defined function. - ErrorMessage As String
Return last error message of SQLite3 engine. - Exec (Query As String, Callback1 As CallbackImpl)
The Callback events never seem to get raised, check if this is executing on a non UI thread.
Or catch the exception in this method to debug... - GetTable (Query As String) As TableResult
- GetTable2 (Query As String, MaxRows As Int) As TableResult
- Initialize
- IsInitialized As Boolean
- LastError As Int
Return the code of the last error that occurred in any of the Exec methods. - LastInsertRowId As Long
Return the row identifier of the last inserted row. - Open (DatabasePath As String, DatabaseFileName As String, OpenMode As Int)
Open a SpatiaLite database file. - OpenBlob (DatabaseName As String, TableName As String, ColumnName As String, Row As Long, ReadWrite As Boolean) As Blob
Open an SQLite3 blob.
The returned Blob will not be initialized if an error occurs. - Prepare (Query As String) As Stmt
Prepare and return SQLite3 statement for SQL. - SetEncoding (Encoding As String)
Set character encoding.
- BusyTimeout (Milliseconds As Int)
- Spatialite_Function
Events:- Function (FunctionContext1 As FunctionContext, Arguments() As String)
- LastStep (FunctionContext1 As FunctionContext)
- Step (FunctionContext1 As FunctionContext, Arguments() As String)
- Methods:
- Initialize (EventName As String)
Initialize this user defined Function.
Raises the events:
Function(FunctionContext1 As FunctionContext, Arguments() As String).
LastStep(FunctionContext1 As FunctionContext).
Step(FunctionContext1 As FunctionContext, Arguments() As String). - IsInitialized As Boolean
- Initialize (EventName As String)
- Spatialite_FunctionContext
Methods:- Count As Int
Retrieve number of rows for aggregate function. - IsInitialized As Boolean
- SetError (Error As String)
Set function result from error message. - SetResultBytes (Result() As Byte)
Set function result from byte array. - SetResultDouble (Result As Double)
Set function result from double. - SetResultInt (Result As Int)
Set function result from integer. - SetResultString (Result As String)
Set function result from string. - SetResultZeroBlob (Size As Int)
Set function result as empty blob given size.
- Count As Int
- Spatialite_Stmt
Methods:- BindBytes (Position As Int, Bytes() As Byte)
Bind positional byte array to compiled statement. - BindDouble (Position As Int, Double1 As Double)
Bind positional double value to compiled statement. - BindInt (Position As Int, Integer1 As Int)
Bind positional integer value to compiled statement. - BindLong (Position As Int, Long1 As Long)
Bind positional long value to compiled statement. - BindNull (Position As Int)
Bind positional SQL null to compiled statement. - BindParameterCount As Int
Return number of parameters in compiled statement. - BindParameterIndex (Name As String) As Int
Return index of named parameter in compiled statement. - BindParameterName (Position As Int) As String
Return name of parameter in compiled statement. - BindString (Position As Int, String1 As String)
Bind positional String to compiled statement. - BindZeroBlob (Position As Int, Length As Int)
Bind positional zero'ed blob to compiled statement. - ClearBindings
Clear all bound parameters of the compiled statement. - Close
Close the compiled statement. - Column (ColumnIndex As Int) As Object
Retrieve column data as Object from exec'ed statement. - ColumnBytes (ColumnIndex As Int) As Byte[]
Retrieve blob column from exec'ed statement. - ColumnCount As Int
Retrieve number of columns of exec'ed statement. - ColumnDatabaseName (ColumnIndex As Int) As String
Return database name of column of statement. - ColumnDeclaredType (ColumnIndex As Int) As String
Return declared column type of statement. - ColumnDouble (ColumnIndex As Int) As Double
Retrieve double column from exec'ed statement. - ColumnInt (ColumnInt As Int) As Int
Retrieve integer column from exec'ed statement. - ColumnLong (ColumnIndex As Int) As Long
Retrieve long column from exec'ed statement. - ColumnName (ColumnIndex As Int) As String
Return column name of column of statement. - ColumnOriginalName (ColumnIndex As Int) As String
Return origin column name of column of statement. - ColumnString (ColumnIndex As Int) As String
Retrieve string column from exec'ed statement. - ColumnTableName (ColumnIndex As Int) As String
Return table name of column of statement. - ColumnType (ColumnIndex As Int) As Int
Retrieve column type from exec'ed statement. - IsInitialized As Boolean
- Prepare As Boolean
Prepare the next SQL statement for the Stmt instance. - Reset
Reset the compiled statement without clearing parameter bindings. - Status (Op As Int, Flag As Boolean) As Int
Return statement status information. - Step As Boolean
Perform one step of compiled statement.
- BindBytes (Position As Int, Bytes() As Byte)
- Spatialite_StringEncoder
Methods:- Decode (String1 As String) As Byte[]
Decodes the given string that is assumed to be a valid encoding of a byte array.
Typically the given string is generated by the StringEncoder Encode method. - Encode (Bytes() As Byte) As String
Encodes the given byte array into a string that can be used by the SQLite database.
The database cannot handle null (0x00) and the character '\'' (0x27).
The encoding consists of escaping these characters with a reserved character (0x01). - EncodeX (Bytes() As Byte) As String
Encodes the given byte array into SQLite3 blob notation, ie X'..'
- Decode (String1 As String) As Byte[]
- Spatialite_TableResult
Methods:- AtMaxRows As Boolean
Flag to indicate MaxRows condition. - Clear
- IsInitialized As Boolean
- AtMaxRows As Boolean
- Properties:
- Column() As String [read only]
Column names of the result set. - MaxRows As Int [read only]
Maximum number of rows to hold in the table. - NumberColumns As Int [read only]
Number of columns in the result set. - NumberRows As Int [read only]
- Rows() As String [read only]
Rows of the result set.
Returns an Array of String Arrays, where each String Array represents a row of the result. - Types() As String [read only]
Types of columns of the result set or Null.
- Column() As String [read only]
Please note that i have only tested a small number of the library objects, if you find any bugs please post a bug report and i'll do my best to fix it.
The Spatialite.jar library file is over 14MBs in size so too large to attach to a forum post.
So you can find the library files here: http://b4a.martinpearman.co.uk/spatialite/ (Spatialite_library_files_v2.20.zip).
Also available at that link is SpatialiteGUI - a small Windows utility that will likely be very handy for you developers.
Martin.
Last edited:
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