Hi,
Thanks for good lightweight CEP product.
1. Need more information about aggregators, partitions, windows,
$row_status. Any links will be highly useful.
2. How are streamcruncher queries different from EQL?
Tried streamcruncher example (StockPriceComparisionTest) with H2 and
Oracle. Get problems
1. with oracle I get below exception
streamcruncher.api.StreamCruncherException
: java.lang.NullPointerException
at streamcruncher.api.StreamCruncher.parseQuery(
StreamCruncher.java:228)
at com.hcl.mifid.sor.cep.StockPriceComparisionTest.init(
StockPriceComparisionTest.java:74)
at com.hcl.mifid.sor.cep.StockPriceComparisionTest.<init>(
StockPriceComparisionTest.java:45)
at com.hcl.mifid.sor.cep.StockPriceComparisionTest.getInstance(
StockPriceComparisionTest.java:28)
at com.hcl.mifid.sor.feeds.FeedQuote1Thread.process(
FeedQuote1Thread.java:72)
at com.hcl.mifid.sor.feeds.FeedQuote1Thread.run(
FeedQuote1Thread.java:139)
at java.lang.Thread.run(
Thread.java:595)
Caused by:
java.lang.NullPointerException
at
streamcruncher.innards.impl.query.OracleParser.getFirstIdColumnInResultS
QL(
OracleParser.java:108)
at streamcruncher.innards.impl.query.AbstractParser.visit(
AbstractParser.java:240)
at streamcruncher.innards.impl.query.AbstractParser.visit(
AbstractParser.java:433)
at streamcruncher.innards.impl.query.AbstractParser.visit(
AbstractParser.java:433)
at streamcruncher.innards.impl.query.AbstractParser.parse(
AbstractParser.java:192)
at streamcruncher.api.StreamCruncher.parseQuery(
StreamCruncher.java:222)
... 6 more
-
java.lang.NullPointerException
at com.hcl.mifid.sor.cep.StockPriceComparisionTest.writetEvents(
StockPriceComparisionTest.java:138)
at com.hcl.mifid.sor.feeds.FeedQuote1Thread.process(
FeedQuote1Thread.java:73)
at com.hcl.mifid.sor.feeds.FeedQuote1Thread.run(
FeedQuote1Thread.java:139)
at java.lang.Thread.run(
Thread.java:595)
2. With H2 I get below exception
Apr 21, 2008 1:27:03 PM streamcruncher.util.TimeKeeper start
INFO: Started
streamcruncher.api.StreamCruncherException
: org.apache.commons.dbcp.SQLNestedException: Cannot create
PoolableConnectionFactory (Syntax error in SQL statement SET
CREATE_BUILD[*] 70; expected AUTOCOMMIT, IGNORECASE, PASSWORD, SALT,
MODE, COMPRESS_LOB, DATABASE, COLLATION, CLUSTER,
DATABASE_EVENT_LISTENER, ALLOW_LITERALS, DEFAULT_TABLE_TYPE, CREATE,
HSQLDB.DEFAULT_TABLE_TYPE, CACHE_TYPE, FILE_LOCK, STORAGE,
DB_CLOSE_ON_EXIT, ACCESS_MODE_LOG, ASSERT, ACCESS_MODE_DATA, RECOVER,
SCHEMA, DATESTYLE, SEARCH_PATH, SCHEMA_SEARCH_PATH, LOGSIZE [42001-56])
at streamcruncher.api.StreamCruncher.start(
StreamCruncher.java:112)
at com.hcl.mifid.sor.cep.StockPriceComparisionTest.<init>(
StockPriceComparisionTest.java:44)
at com.hcl.mifid.sor.cep.StockPriceComparisionTest.getInstance(
StockPriceComparisionTest.java:28)
at com.hcl.mifid.sor.feeds.FeedQuote1Thread.process(
FeedQuote1Thread.java:72)
at com.hcl.mifid.sor.feeds.FeedQuote1Thread.run(
FeedQuote1Thread.java:139)
at java.lang.Thread.run(
Thread.java:595)
Caused by:
org.apache.commons.dbcp.SQLNestedException: Cannot create
PoolableConnectionFactory (Syntax error in SQL statement SET
CREATE_BUILD[*] 70; expected AUTOCOMMIT, IGNORECASE, PASSWORD, SALT,
MODE, COMPRESS_LOB, DATABASE, COLLATION, CLUSTER,
DATABASE_EVENT_LISTENER, ALLOW_LITERALS, DEFAULT_TABLE_TYPE, CREATE,
HSQLDB.DEFAULT_TABLE_TYPE, CACHE_TYPE, FILE_LOCK, STORAGE,
DB_CLOSE_ON_EXIT, ACCESS_MODE_LOG, ASSERT, ACCESS_MODE_DATA, RECOVER,
SCHEMA, DATESTYLE, SEARCH_PATH, SCHEMA_SEARCH_PATH, LOGSIZE [42001-56])
at org.apache.commons.dbcp.BasicDataSource.createDataSource(
BasicDataSource.java:855)
at org.apache.commons.dbcp.BasicDataSource.getConnection(
BasicDataSource.java:540)
at streamcruncher.innards.db.DatabaseInterface.createConnection(
DatabaseInterface.java:243)
at
streamcruncher.innards.db.DatabaseInterface.setupLastStandingConnection(
DatabaseInterface.java:135)
at streamcruncher.innards.db.DatabaseInterface.start(
DatabaseInterface.java:124)
at streamcruncher.boot.Main.initInnards(
Main.java:170)
at streamcruncher.boot.Main.start(
Main.java:88)
at streamcruncher.api.StreamCruncher.start(
StreamCruncher.java:109)
... 5 more
Caused by:
org.h2.jdbc.JdbcSQLException: Syntax error in SQL statement SET
CREATE_BUILD[*] 70; expected AUTOCOMMIT, IGNORECASE, PASSWORD, SALT,
MODE, COMPRESS_LOB, DATABASE, COLLATION, CLUSTER,
DATABASE_EVENT_LISTENER, ALLOW_LITERALS, DEFAULT_TABLE_TYPE, CREATE,
HSQLDB.DEFAULT_TABLE_TYPE, CACHE_TYPE, FILE_LOCK, STORAGE,
DB_CLOSE_ON_EXIT, ACCESS_MODE_LOG, ASSERT, ACCESS_MODE_DATA, RECOVER,
SCHEMA, DATESTYLE, SEARCH_PATH, SCHEMA_SEARCH_PATH, LOGSIZE [42001-56]
at org.h2.message.Message.addSQL(
Message.java:360)
at org.h2.engine.MetaRecord.execute(
MetaRecord.java:69)
at org.h2.engine.Database.open(
Database.java:516)
at org.h2.engine.Database.<init>(
Database.java:179)
at org.h2.engine.Engine.openSession(
Engine.java:49)
at org.h2.engine.Engine.getSession(
Engine.java:92)
at org.h2.engine.Session.createSession(
Session.java:134)
at org.h2.jdbc.JdbcConnection.<init>(
JdbcConnection.java:928)
at org.h2.Driver.connect(
Driver.java:51)
at org.apache.commons.dbcp.DriverConnectionFactory.createConnection(
DriverConnectionFactory.java:37)
at org.apache.commons.dbcp.PoolableConnectionFactory.makeObject(
PoolableConnectionFactory.java:290)
at org.apache.commons.dbcp.BasicDataSource.validateConnectionFactory(
BasicDataSource.java:877)
at org.apache.commons.dbcp.BasicDataSource.createDataSource(
BasicDataSource.java:851)
... 12 more
Caused by:
org.h2.jdbc.JdbcSQLException: Syntax error in SQL statement SET
CREATE_BUILD[*] 70; expected AUTOCOMMIT, IGNORECASE, PASSWORD, SALT,
MODE, COMPRESS_LOB, DATABASE, COLLATION, CLUSTER,
DATABASE_EVENT_LISTENER, ALLOW_LITERALS, DEFAULT_TABLE_TYPE, CREATE,
HSQLDB.DEFAULT_TABLE_TYPE, CACHE_TYPE, FILE_LOCK, STORAGE,
DB_CLOSE_ON_EXIT, ACCESS_MODE_LOG, ASSERT, ACCESS_MODE_DATA, RECOVER,
SCHEMA, DATESTYLE, SEARCH_PATH, SCHEMA_SEARCH_PATH, LOGSIZE [42001-56]
at org.h2.message.Message.getSQLException(
Message.java:84)
at org.h2.message.Message.getSyntaxError(
Message.java:94)
at org.h2.command.Parser.getSyntaxError(
Parser.java:442)
at org.h2.command.Parser.parseSet(
Parser.java:3673)
at org.h2.command.Parser.parsePrepared(
Parser.java:358)
at org.h2.command.Parser.parse(
Parser.java:254)
at org.h2.command.Parser.parse(
Parser.java:230)
at org.h2.command.Parser.prepare(
Parser.java:179)
at org.h2.engine.Session.prepare(
Session.java:159)
at org.h2.engine.Session.prepare(
Session.java:153)
at org.h2.engine.MetaRecord.execute(
MetaRecord.java:64)
... 23 more
-
java.lang.NullPointerException
at com.hcl.mifid.sor.cep.StockPriceComparisionTest.writetEvents(
StockPriceComparisionTest.java:138)
at com.hcl.mifid.sor.feeds.FeedQuote1Thread.process(
FeedQuote1Thread.java:73)
at com.hcl.mifid.sor.feeds.FeedQuote1Thread.run(
FeedQuote1Thread.java:139)
at java.lang.Thread.run(
Thread.java:595)
Thanks
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