annotate ChangeLog @ 1168:c003d2c1a053

updated ChangeLog
author Konstantina Bereta <>
date Fri May 10 16:10:00 2013 +0300 (2013-05-10)
parents ef429743d55a
children da14a303bf2c
rev   line source
charnik@932 1 Day Month Date Hour:Min:Sec Year Pyravlos Team
charnik@932 2
charnik@932 3 * Version 3.2.9 released.
charnik@932 4
charnik@1012 5 * Added support of all SPARQL result types provided by Sesame (json,
charnik@1012 6 xml, csv, tsv, binary). To get the respective writer, just prepend the
charnik@1012 7 string "SPARQL/", e.g., "SPARQL/JSON". This is to ensure that we
charnik@1012 8 support all SPARQL result formats of the SPARQL Protocol.
charnik@1012 9
charnik@990 10 * Fixed a bug where a non-implemented extension function would make
charnik@990 11 Strabon throw a NULL pointer exception. Now we get away with it
charnik@990 12 through a warning.
charnik@990 13
charnik@990 14 * Strabon endpoint now publishes the URIs of the supported units of
charnik@990 15 measure for use in strdf:distance and geof:distance functions of
charnik@990 16 stSPARQL and GeoSPARQL, respectively. The URIs are those defined by
charnik@990 17 OGC Units of Measure 1.0 specification which may be found at
charnik@990 18 Strabon endpoint publishes
charnik@990 19 the URIs at http://localhost:8080/endpoint/Capabilities.
charnik@990 20
charnik@1004 21 * Created new module with name 'vocab` and artifactId
charnik@1004 22 'strabon-vocabulary` and moved there. Other
charnik@1004 23 vocabularies have been added as well, such as Simple Features, and
charnik@1004 24 GeoSPARQL.
charnik@966 25
charnik@964 26 * Strabon endpoint now publishes the URIs of the supported extension
charnik@964 27 functions for stSPARQL and GeoSPARQL. One should access them by
charnik@964 28 hitting the link http://localhost:8080/endpoint/Capabilities.
charnik@964 29
charnik@932 30 * Support for parsing EPSG URIs in geometry literals with datatype
charnik@932 31 geo:wktLiteral.
charnik@932 32 (bug #33:
Konstantina@1142 33
Konstantina@1142 34 *Modified the NQUADSTranslator so that the rewritten triples are
Konstantina@1142 35 immediately flushed to the database once they are created.
Konstantina@1142 36
Konstantina@1142 37 *In the N-Quads format, the fourth element is *optional*. Made proper
Konstantina@1142 38 modification to the storage manager to coply to the specification
Konstantina@1142 39 described here: Now files in
Konstantina@1142 40 NQUADS format can contain quads *or* triples in order to be stored
Konstantina@1142 41 successfully in Strabon.
Konstantina@1142 42
Konstantina@1142 43 *Fixed bug that occurs when storing periods having "UC" as ending
Konstantina@1142 44 point.
Konstantina@1142 45
Konstantina@1142 46 *Added an initial set of tests on temporal operations in the
Konstantina@1142 47 testsuite module.
Konstantina@1158 48
Konstantina@1158 49 *Completed support for temporal updates
Konstantina@1158 50
Konstantina@1158 51 *Moved vocabulary related to the temporal features of Strabon to the
Konstantina@1158 52 respective "vocabulary" project
charnik@932 53
Konstantina@1168 54 *The evaluation of temporal joins in the database does not produce
Konstantina@1168 55 cartesian products in the database
Konstantina@1168 56
charnik@927 57 Tue Mar 26 13:28:26 2013 Pyravlos Team
charnik@645 58
charnik@853 59 * Version 3.2.8 released.
charnik@853 60
charnik@926 61 * Added support for handling (storing/querying) GeoSPARQL datatypes.
charnik@926 62 (bug #31:
charnik@926 63
charnik@926 64 * Fixed a bug in StoreOp that wouldn't close the connection, neither
charnik@926 65 rollback the transaction upon an exception. This had as a side effect
charnik@926 66 the abnormal termination of StoreOp (through for example the use of
charnik@926 67 Ctrl-C signal) which was leaving the database locked.
charnik@926 68
charnik@926 69 * Fixed bug where spatial aggregates (e.g., union) didn't work as
charnik@926 70 expected when the query didn't contain a `GROUP BY' clause.
charnik@926 71 (bug #22:
charnik@926 72
charnik@926 73 * Updated GeoSPARQL namespaces and fixed function names to comply with
charnik@926 74 the GeoSPARQL specification.
charnik@926 75 (bug #25:
Konstantina@1142 76
Konstantina@1142 77 *Added preliminary tests on temporal functions in the respective
Konstantina@1142 78 "test" package of the runtime module.
Konstantina@1142 79
Konstantina@1142 80 *Added option to strabon and endpoint scripts to support storing
Konstantina@1142 81 files in NQUADS format.
Konstantina@1142 82
Konstantina@1142 83 *When a large file in NQUADS format is going to be stored, it is
Konstantina@1142 84 partitioned and stored in parts. This happens because the translation
Konstantina@1142 85 of quads to triples is a memory intensive job, so, translating and
Konstantina@1142 86 storing the file in batches increases performance.
Konstantina@1142 87
charnik@926 88
charnik@853 89 Wed Jan 09 18:06:41 2013 Pyravlos Team
charnik@853 90
kkyzir@801 91 * Version 3.2.7 released.
kkyzir@801 92
ggarbis@854 93 * Add an extension function
ggarbis@854 94 <> for computing the
ggarbis@854 95 span (in milliseconds) between two timestamps.
ggarbis@854 96
ggarbis@854 97 * Added an <endpoint-exec> module. This module builds an executable jar file
ggarbis@854 98 with an embedded Apache Tomcat 7. To create and run the executable jar just
ggarbis@854 99 type:
ggarbis@854 100 $ mvn clean package
ggarbis@854 101 $ java -jar endpoint-exec/target/strabon-endpoint-executable-*.jar
charnik@853 102
charnik@810 103 * Modified strabon script and postgis/monetdb.StoreOP class to get an
charnik@810 104 option for storing a RDF file in a named graph. Moreover, the RDF
charnik@810 105 format of the input RDF file now is given as an option (still, if it
charnik@810 106 is missing, it is assumed that the input is in N-TRIPLES format). The
charnik@810 107 option for the format is -f and the option for the named graph is -g
charnik@810 108 (takes a URI as an argument).
charnik@810 109
kkyzir@801 110 * Modified the names of the stSPARQL extension functions that
kkyzir@801 111 utilize the minimum bounding boxes of the involved geometries.
Konstantina@1142 112
Konstantina@1142 113 *Fixed bug in the evaluation of temporal constructs.
Konstantina@1142 114
Konstantina@1142 115 *Fixed a major bug that occured when a temporal variable that also took part
Konstantina@1142 116 in a temporal join was projected.
Konstantina@1142 117
Konstantina@1142 118 *Renamed temporal extension functions to comply with the respective
Konstantina@1142 119 functions of Allen's temporal relations.
Konstantina@1142 120
Konstantina@1142 121 *Modified the implementation of the temporal relation functions
Konstantina@1142 122 "meets", "starts", "finishes", to comply with the semantics of the
Konstantina@1142 123 respective functions of Allen. These functions are not supported by
Konstantina@1142 124 PostgreSQL Temporal, so, in order to be evaluated in the database
Konstantina@1142 125 level, we implemented them as PostgreSQL extension functions.
Konstantina@1142 126 ATTENTION: In order to use these functions, the respective sql script
Konstantina@1142 127 that includes them should be loaded to the the temporally (and spa-
Konstantina@1142 128 tially) enabled database.
Konstantina@1142 129
kkyzir@801 130
charnik@811 131 Tue Dec 11 19:33:45 2012 Pyravlos Team
charnik@811 132
kkyzir@800 133 * Version 3.2.6 released.
kkyzir@800 134
kkyzir@800 135 * Modified the names of the stSPARQL extension functions to comply
kkyzir@801 136 with the OGC Simple Features Access standard.
kkyzir@800 137
charnik@811 138 Tue Dec 11 00:11:43 2012 Pyravlos Team
charnik@811 139
charnik@645 140 * Version 3.2.5 released.
charnik@645 141
Konstantina@1142 142 * Added support for storing and querying temporal information.
Konstantina@1142 143 This functionality may be found in the `temporals' branch.
Konstantina@848 144
Konstantina@1142 145 *The datatypes <> and
charnik@849 146 <> are used to
Konstantina@1142 147 represent periods and instants respectively.
Konstantina@848 148
Konstantina@1142 149 *The valid time time of triples is represented using quadtruples,
charnik@849 150 with the valid time annotation(instant or period) being the
Konstantina@1142 151 fourth element of the quad. Into this direction:
Konstantina@1142 152 *Strabon has been extended to support the NQUADS format. The
Konstantina@1142 153 respective Sesame packages (of version 2.6.9) that support
Konstantina@1142 154 this format are used.
Konstantina@1142 155
Konstantina@1142 156 *NQuadTranslator class has been created. This class uses the
Konstantina@1142 157 NQUADS parser which is available here:
Konstantina@1142 158 The initial version of this parser did not include support
Konstantina@1142 159 for literals as the fourth element of the quad. We exteded
Konstantina@1142 160 it to support the valid time representations described above.
Konstantina@1142 161
Konstantina@1142 162 *The NQUADSTranslator translates quads into triples using the
Konstantina@1142 163 named graph approach, similar to the one proposed by Tappolet
Konstantina@1142 164 et al. and described in
Konstantina@1142 165
Konstantina@1142 166 *The rdbms level of Strabon has been extended to (i) support
Konstantina@1142 167 tha period datatype (ii) store the period values in the table
Konstantina@1142 168 period_values(id, period). The period column is of the period
Konstantina@1142 169 datatype, offered by the PostgreSQL Temporal extension (
Konstantina@1142 170 Also, a GiST index is created on this column.
Konstantina@1142 171
Konstantina@1142 172 *A rewriting mechanism that converts quad graph patterns into
Konstantina@1142 173 triple partners using the named graphs approach has been
Konstantina@1142 174 implemented as a method of the runtime.generaldb.Strabon
Konstantina@1142 175 class.
Konstantina@1142 176
Konstantina@1142 177 *A big part of the temporal functions of stSPARQL has been
Konstantina@1142 178 imlemented. These functions include:
Konstantina@1142 179 *The temporal relation functions during, periodOverlaps,
Konstantina@1142 180 equalsPeriod, nequalsPeriod, adjacent, before, after,
Konstantina@1142 181 overleft, overright, meets, starts, finishes.
Konstantina@1142 182
Konstantina@1142 183 *The period constructors period_intersect, period_union,
Konstantina@1142 184 preceding_period, and succeeding_period. The last two
Konstantina@1142 185 constructors are implemented using the jtemporal library.
Konstantina@1142 186 The other functions are implemented in the database,
Konstantina@1142 187 being mapped into the respective functions of PostgreSQL
Konstantina@1142 188 Temporal. A complete reference of PostgreSQL Temporal
Konstantina@1142 189 can be found here:
Konstantina@1142 190
Konstantina@1142 191 *The temporal constants "NOW" and "UC" (Until Changed)
Konstantina@1142 192 are supported.
Konstantina@1142 193
Konstantina@1142 194 *The vocabulary of the valid time dimension of stSPARQL can
Konstantina@1142 195 be found at the TemporalConstants class of the evaluation
Konstantina@1142 196 module.
Konstantina@1142 197
charnik@759 198 * Changed behaviour of Strabon and Strabon Endpoint for connecting to
charnik@759 199 a spatially-enabled database. Only one instance of Strabon is allowed
charnik@759 200 at a time.
charnik@759 201
charnik@688 202 * Implemented a Java client for Strabon Endpoint. The client should be
charnik@688 203 used only with endpoint versions >=3.2.5. The implementation may be
charnik@688 204 found int the `endpoint-client' submodule of maven. Currently, only
charnik@688 205 querying of Strabon Endpoints is supported.
charnik@688 206
charnik@662 207 * Added support for requesting the capabilities of Strabon Endpoint
charnik@662 208 (fixes Bug #20 <>). See
charnik@662 209 changesets f840796400bf and ?<TBC>? for specific details and how you
charnik@662 210 can determine the capabilities of older endpoints (versions <= 3.2.4).
charnik@662 211
charnik@658 212 * Updated KML writer to include the projected variables of an stSPARQL
charnik@658 213 query in "ExtendedData" and "Data" tags. This is the proper way to
charnik@658 214 do it if we need to convert a KML to a ESRI shapefile and also include
charnik@658 215 such information as attributes for a feature. See related pages from
charnik@658 216 KML specification:
charnik@658 217 <>
charnik@658 218 <>
charnik@658 219
charnik@645 220 * Added user authentication for storing RDF data through Strabon
charnik@662 221 Endpoint. The credentials are specified in
charnik@662 222 WEB-INF/ file.
charnik@645 223
charnik@645 224 * Strabon Endpoints now limits the number of the results to a maximum
charnik@645 225 one. The maximum number is specified in the beans.xml file. This
charnik@645 226 corresponds to parameter "maxLimit". The endpoint script has also been
charnik@645 227 updated correspondingly; the limit can be given using the option "-l".
charnik@645 228 One can disable limiting of query results, by setting the "maxLimit"
charnik@645 229 parameter to 0. Addresses Bug #6
charnik@645 230 (<>).
charnik@645 231
charnik@645 232 * Added "Known Issues" section to README.
charnik@645 233
charnik@645 234 * Added -m (more memory) and -M (much more memory) options in strabon
charnik@645 235 script for out-of-memory exceptions.
charnik@645 236
charnik@849 237 * Fixed Bug #10 (<>). Now
charnik@849 238 KMLWriter handles more geometric types (other than polygons). See
charnik@849 239 changeset 9a3bfee64a39.
charnik@645 240
charnik@645 241 * Menu and navigation in Strabon Endpoint has changed to use jquery.
charnik@645 242 The menu is now populated using the queries placed inside the beans.xml.
charnik@645 243
charnik@645 244 * Added BrowseBean and browse.jsp for browsing the RDF data using the
charnik@645 245 Strabon Endpoint.