database column's name contains $ sign

[vitalz]

Consider if $ is not forbidden in database column naming then people may use it. If database column's name contains $ sign then org.apache.cayenne.exp.parser.ParseException with be thrown. For instance,

.matchBy("db:team$")

Cayenne expression parser thinks that $ means to bind parameter there, etc. That is why if fails.

Caused by: org.apache.cayenne.exp.ExpressionException: [v.4.0.M3.debfa94 May 22 2015 16:06:39] Encountered " "$" "$ "" at line 1, column 8.
Was expecting one of:
    <EOF> 
    "or" ...
    "and" ...
    "not" ...
    "!" ...
    "=" ...
    "==" ...
    "!=" ...
    "<>" ...
    "<=" ...
    "<" ...
    ">" ...
    ">=" ...
    "like" ...
    "likeIgnoreCase" ...
    "in" ...
    "between" ...
    "|" ...
    "^" ...
    "&" ...
    "<<" ...
    ">>" ...
    "+" ...
    "-" ...
    "*" ...
    "/" ...

    at org.apache.cayenne.exp.ExpressionFactory.fromString(ExpressionFactory.java:1035)
    at org.apache.cayenne.exp.ExpressionFactory.exp(ExpressionFactory.java:996)
    at com.nhl.link.move.runtime.task.MapperBuilder.createSafeKeyMapper(MapperBuilder.java:105)
    at com.nhl.link.move.runtime.task.MapperBuilder.build(MapperBuilder.java:90)
    at com.nhl.link.move.runtime.task.createorupdate.DefaultCreateOrUpdateBuilder.createProcessor(DefaultCreateOrUpdateBuilder.java:239)
    at com.nhl.link.move.runtime.task.createorupdate.DefaultCreateOrUpdateBuilder.task(DefaultCreateOrUpdateBuilder.java:233)
    at com.nhl.link.*************
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
    at org.apache.tapestry5.ioc.internal.util.ConstructorInvoker.invoke(ConstructorInvoker.java:48)
    ... 25 more
Caused by: org.apache.cayenne.exp.parser.ParseException: Encountered " "$" "$ "" at line 1, column 8.
Was expecting one of:
    <EOF> 
    "or" ...
    "and" ...
    "not" ...
    "!" ...
    "=" ...
    "==" ...
    "!=" ...
    "<>" ...
    "<=" ...
    "<" ...
    ">" ...
    ">=" ...
    "like" ...
    "likeIgnoreCase" ...
    "in" ...
    "between" ...
    "|" ...
    "^" ...
    "&" ...
    "<<" ...
    ">>" ...
    "+" ...
    "-" ...
    "*" ...
    "/" ...

    at org.apache.cayenne.exp.parser.ExpressionParser.generateParseException(ExpressionParser.java:1722)
    at org.apache.cayenne.exp.parser.ExpressionParser.jj_consume_token(ExpressionParser.java:1657)
    at org.apache.cayenne.exp.parser.ExpressionParser.expression(ExpressionParser.java:47)
    at org.apache.cayenne.exp.ExpressionFactory.fromString(ExpressionFactory.java:1030)
    ... 36 more

[andrus]

I opened a Jira in Cayenne: https://issues.apache.org/jira/browse/CAY-2034 This is a limitation of Cayenne expression parser.