annotate ChangeLog @ 1142:b739b7f99c4d

updated Changelog
author Konstantina Bereta <>
date Wed May 01 14:05:20 2013 +0300 (2013-05-01)
parents 4e4583f93e69
children ef429743d55a
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.
charnik@932 48
charnik@927 49 Tue Mar 26 13:28:26 2013 Pyravlos Team
charnik@645 50
charnik@853 51 * Version 3.2.8 released.
charnik@853 52
charnik@926 53 * Added support for handling (storing/querying) GeoSPARQL datatypes.
charnik@926 54 (bug #31:
charnik@926 55
charnik@926 56 * Fixed a bug in StoreOp that wouldn't close the connection, neither
charnik@926 57 rollback the transaction upon an exception. This had as a side effect
charnik@926 58 the abnormal termination of StoreOp (through for example the use of
charnik@926 59 Ctrl-C signal) which was leaving the database locked.
charnik@926 60
charnik@926 61 * Fixed bug where spatial aggregates (e.g., union) didn't work as
charnik@926 62 expected when the query didn't contain a `GROUP BY' clause.
charnik@926 63 (bug #22:
charnik@926 64
charnik@926 65 * Updated GeoSPARQL namespaces and fixed function names to comply with
charnik@926 66 the GeoSPARQL specification.
charnik@926 67 (bug #25:
Konstantina@1142 68
Konstantina@1142 69 *Added preliminary tests on temporal functions in the respective
Konstantina@1142 70 "test" package of the runtime module.
Konstantina@1142 71
Konstantina@1142 72 *Added option to strabon and endpoint scripts to support storing
Konstantina@1142 73 files in NQUADS format.
Konstantina@1142 74
Konstantina@1142 75 *When a large file in NQUADS format is going to be stored, it is
Konstantina@1142 76 partitioned and stored in parts. This happens because the translation
Konstantina@1142 77 of quads to triples is a memory intensive job, so, translating and
Konstantina@1142 78 storing the file in batches increases performance.
Konstantina@1142 79
charnik@926 80
charnik@853 81 Wed Jan 09 18:06:41 2013 Pyravlos Team
charnik@853 82
kkyzir@801 83 * Version 3.2.7 released.
kkyzir@801 84
ggarbis@854 85 * Add an extension function
ggarbis@854 86 <> for computing the
ggarbis@854 87 span (in milliseconds) between two timestamps.
ggarbis@854 88
ggarbis@854 89 * Added an <endpoint-exec> module. This module builds an executable jar file
ggarbis@854 90 with an embedded Apache Tomcat 7. To create and run the executable jar just
ggarbis@854 91 type:
ggarbis@854 92 $ mvn clean package
ggarbis@854 93 $ java -jar endpoint-exec/target/strabon-endpoint-executable-*.jar
charnik@853 94
charnik@810 95 * Modified strabon script and postgis/monetdb.StoreOP class to get an
charnik@810 96 option for storing a RDF file in a named graph. Moreover, the RDF
charnik@810 97 format of the input RDF file now is given as an option (still, if it
charnik@810 98 is missing, it is assumed that the input is in N-TRIPLES format). The
charnik@810 99 option for the format is -f and the option for the named graph is -g
charnik@810 100 (takes a URI as an argument).
charnik@810 101
kkyzir@801 102 * Modified the names of the stSPARQL extension functions that
kkyzir@801 103 utilize the minimum bounding boxes of the involved geometries.
Konstantina@1142 104
Konstantina@1142 105 *Fixed bug in the evaluation of temporal constructs.
Konstantina@1142 106
Konstantina@1142 107 *Fixed a major bug that occured when a temporal variable that also took part
Konstantina@1142 108 in a temporal join was projected.
Konstantina@1142 109
Konstantina@1142 110 *Renamed temporal extension functions to comply with the respective
Konstantina@1142 111 functions of Allen's temporal relations.
Konstantina@1142 112
Konstantina@1142 113 *Modified the implementation of the temporal relation functions
Konstantina@1142 114 "meets", "starts", "finishes", to comply with the semantics of the
Konstantina@1142 115 respective functions of Allen. These functions are not supported by
Konstantina@1142 116 PostgreSQL Temporal, so, in order to be evaluated in the database
Konstantina@1142 117 level, we implemented them as PostgreSQL extension functions.
Konstantina@1142 118 ATTENTION: In order to use these functions, the respective sql script
Konstantina@1142 119 that includes them should be loaded to the the temporally (and spa-
Konstantina@1142 120 tially) enabled database.
Konstantina@1142 121
kkyzir@801 122
charnik@811 123 Tue Dec 11 19:33:45 2012 Pyravlos Team
charnik@811 124
kkyzir@800 125 * Version 3.2.6 released.
kkyzir@800 126
kkyzir@800 127 * Modified the names of the stSPARQL extension functions to comply
kkyzir@801 128 with the OGC Simple Features Access standard.
kkyzir@800 129
charnik@811 130 Tue Dec 11 00:11:43 2012 Pyravlos Team
charnik@811 131
charnik@645 132 * Version 3.2.5 released.
charnik@645 133
Konstantina@1142 134 * Added support for storing and querying temporal information.
Konstantina@1142 135 This functionality may be found in the `temporals' branch.
Konstantina@848 136
Konstantina@1142 137 *The datatypes <> and
charnik@849 138 <> are used to
Konstantina@1142 139 represent periods and instants respectively.
Konstantina@848 140
Konstantina@1142 141 *The valid time time of triples is represented using quadtruples,
charnik@849 142 with the valid time annotation(instant or period) being the
Konstantina@1142 143 fourth element of the quad. Into this direction:
Konstantina@1142 144 *Strabon has been extended to support the NQUADS format. The
Konstantina@1142 145 respective Sesame packages (of version 2.6.9) that support
Konstantina@1142 146 this format are used.
Konstantina@1142 147
Konstantina@1142 148 *NQuadTranslator class has been created. This class uses the
Konstantina@1142 149 NQUADS parser which is available here:
Konstantina@1142 150 The initial version of this parser did not include support
Konstantina@1142 151 for literals as the fourth element of the quad. We exteded
Konstantina@1142 152 it to support the valid time representations described above.
Konstantina@1142 153
Konstantina@1142 154 *The NQUADSTranslator translates quads into triples using the
Konstantina@1142 155 named graph approach, similar to the one proposed by Tappolet
Konstantina@1142 156 et al. and described in
Konstantina@1142 157
Konstantina@1142 158 *The rdbms level of Strabon has been extended to (i) support
Konstantina@1142 159 tha period datatype (ii) store the period values in the table
Konstantina@1142 160 period_values(id, period). The period column is of the period
Konstantina@1142 161 datatype, offered by the PostgreSQL Temporal extension (
Konstantina@1142 162 Also, a GiST index is created on this column.
Konstantina@1142 163
Konstantina@1142 164 *A rewriting mechanism that converts quad graph patterns into
Konstantina@1142 165 triple partners using the named graphs approach has been
Konstantina@1142 166 implemented as a method of the runtime.generaldb.Strabon
Konstantina@1142 167 class.
Konstantina@1142 168
Konstantina@1142 169 *A big part of the temporal functions of stSPARQL has been
Konstantina@1142 170 imlemented. These functions include:
Konstantina@1142 171 *The temporal relation functions during, periodOverlaps,
Konstantina@1142 172 equalsPeriod, nequalsPeriod, adjacent, before, after,
Konstantina@1142 173 overleft, overright, meets, starts, finishes.
Konstantina@1142 174
Konstantina@1142 175 *The period constructors period_intersect, period_union,
Konstantina@1142 176 preceding_period, and succeeding_period. The last two
Konstantina@1142 177 constructors are implemented using the jtemporal library.
Konstantina@1142 178 The other functions are implemented in the database,
Konstantina@1142 179 being mapped into the respective functions of PostgreSQL
Konstantina@1142 180 Temporal. A complete reference of PostgreSQL Temporal
Konstantina@1142 181 can be found here:
Konstantina@1142 182
Konstantina@1142 183 *The temporal constants "NOW" and "UC" (Until Changed)
Konstantina@1142 184 are supported.
Konstantina@1142 185
Konstantina@1142 186 *The vocabulary of the valid time dimension of stSPARQL can
Konstantina@1142 187 be found at the TemporalConstants class of the evaluation
Konstantina@1142 188 module.
Konstantina@1142 189
charnik@759 190 * Changed behaviour of Strabon and Strabon Endpoint for connecting to
charnik@759 191 a spatially-enabled database. Only one instance of Strabon is allowed
charnik@759 192 at a time.
charnik@759 193
charnik@688 194 * Implemented a Java client for Strabon Endpoint. The client should be
charnik@688 195 used only with endpoint versions >=3.2.5. The implementation may be
charnik@688 196 found int the `endpoint-client' submodule of maven. Currently, only
charnik@688 197 querying of Strabon Endpoints is supported.
charnik@688 198
charnik@662 199 * Added support for requesting the capabilities of Strabon Endpoint
charnik@662 200 (fixes Bug #20 <>). See
charnik@662 201 changesets f840796400bf and ?<TBC>? for specific details and how you
charnik@662 202 can determine the capabilities of older endpoints (versions <= 3.2.4).
charnik@662 203
charnik@658 204 * Updated KML writer to include the projected variables of an stSPARQL
charnik@658 205 query in "ExtendedData" and "Data" tags. This is the proper way to
charnik@658 206 do it if we need to convert a KML to a ESRI shapefile and also include
charnik@658 207 such information as attributes for a feature. See related pages from
charnik@658 208 KML specification:
charnik@658 209 <>
charnik@658 210 <>
charnik@658 211
charnik@645 212 * Added user authentication for storing RDF data through Strabon
charnik@662 213 Endpoint. The credentials are specified in
charnik@662 214 WEB-INF/ file.
charnik@645 215
charnik@645 216 * Strabon Endpoints now limits the number of the results to a maximum
charnik@645 217 one. The maximum number is specified in the beans.xml file. This
charnik@645 218 corresponds to parameter "maxLimit". The endpoint script has also been
charnik@645 219 updated correspondingly; the limit can be given using the option "-l".
charnik@645 220 One can disable limiting of query results, by setting the "maxLimit"
charnik@645 221 parameter to 0. Addresses Bug #6
charnik@645 222 (<>).
charnik@645 223
charnik@645 224 * Added "Known Issues" section to README.
charnik@645 225
charnik@645 226 * Added -m (more memory) and -M (much more memory) options in strabon
charnik@645 227 script for out-of-memory exceptions.
charnik@645 228
charnik@849 229 * Fixed Bug #10 (<>). Now
charnik@849 230 KMLWriter handles more geometric types (other than polygons). See
charnik@849 231 changeset 9a3bfee64a39.
charnik@645 232
charnik@645 233 * Menu and navigation in Strabon Endpoint has changed to use jquery.
charnik@645 234 The menu is now populated using the queries placed inside the beans.xml.
charnik@645 235
charnik@645 236 * Added BrowseBean and browse.jsp for browsing the RDF data using the
charnik@645 237 Strabon Endpoint.