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https://issues.apache.org/jira/browse/OLINGO-1460?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17124837#comment-17124837
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Mahdi Ansari edited comment on OLINGO-1460 at 6/3/20, 10:34 AM:
----------------------------------------------------------------
Here is a workaround for how to remove the incorrect 'escape' statement with
only one slash, however does not solve the original issue and is not the most
efficient way:
public class SqlStatementInspector implements StatementInspector { private
static final long serialVersionUID = 1L; private static final Logger LOG =
Logger.getLogger(SqlStatementInspector.class);@Override public String
inspect(String sql) {if (!sql.contains("escape \'
'"))
{return sql;}
// OData JPA query correction -> current version (2.0.11) contains// the
invalid 'escape "\"' statement that delivers no results
LOG.info("Replacing invalid statement: escape \"\\\"");return
sql.replace("escape \'
'", "");}}
This overwrites the inspect method and you can modify the generated sql query
when using hibernate.
was (Author: mjz):
Here is a workaround for how to remove the incorrect 'escape' statement with
only one slash, however does not solve the original issue and is not the most
efficient way:
{{public class SqlStatementInspector implements StatementInspector { private
static final long serialVersionUID = 1L; private static final Logger LOG =
Logger.getLogger(SqlStatementInspector.class);@Override public String
inspect(String sql) {if (!sql.contains("escape \'\\'")) {return sql;}// OData
JPA query correction -> current version (2.0.11) contains// the invalid 'escape
"\"' statement that delivers no results
LOG.info("Replacing invalid statement: escape \"\\\"");return
sql.replace("escape \'\\'", "");}}}}
This overwrites the inspect method and you can modify the generated sql query
when using hibernate.
> $filter not working in JPA/Olingo 2.0.11 with MySQL
> ---------------------------------------------------
>
> Key: OLINGO-1460
> URL: https://issues.apache.org/jira/browse/OLINGO-1460
> Project: Olingo
> Issue Type: Bug
> Components: odata2-jpa
> Affects Versions: V2 2.0.11
> Environment: spring-boot 2.3.0, windows, MariaDB
> Reporter: Mahdi Ansari
> Priority: Major
>
> I made an odata service with {{olingo2}}, {{jpa}} and {{spring-boot}} based
> on this [GitHub repository|https://github.com/jpenninkhof/odata-boilerplate].
> I've set up the project to use MariaDB database and _it works quiet good_.
> However, the project is a little bit old and I tried to upgrade it!
> In the first step I tried to update the libraries versions like this:
>
> {{
> <parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.3.0.RELEASE</version></parent><properties><java.version>1.8</java.version><cxf.version>3.3.6</cxf.version><olingo.version>2.0.11</olingo.version></properties>}}
> when I try the following request that I use a filtering on a column of type
> string:
>
> {{http://localhost:9090/odata.svc/Members?$format=json&$filter=FirstName eq
> 'Jack'}}
> I receive an error message in response to my request in postman or browser,
> like this:
>
> {{{"error": {"code": null,"message": {"lang": "en","value":
> "org.hibernate.exception.SQLGrammarException: could not extract
> ResultSet"}}}}}
>
> It actually generates a wrong query on database while it has the correct
> dialect!
> What is the problem here? It uses {{escape '\'}} instead of {{escape '\\'}}
> in the query.
> What is your suggestion for solving this issue?
> The interesting part is if I have $filter and $expand at the same time in my
> query then it will not inject escape '\' in the query anymore.
>
>
>
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