`fix_on_fail` in the configuration file. By default, this feature is disabled.

_With 15cd5944, this commit finishes the resolution of the GitHub issue #104 ._

This new function - ADQLParser.tryQuickFix(...) - fixes the most common issues
with ADQL queries:

- replace Unicode confusable characters by their ASCII/UTF-8 version,
- double-quote SQL reserved words/terms (e.g. `public`, `year`, `date`),
- double-quote ADQL function names used a column name/alias (e.g. `distance`,
  `min`, `avg`),
- double-quote invalid regular identifiers (e.g. `_RAJ2000`, `2mass`).

The last point is far from being perfect but should work at least for
identifiers starting with a digit or an underscore, or an identifier including
one of the following character: `?`, `!`, `$`, `@`, `#`, `{`, `}`, `[`, `]`,
`~`, `^` and '`'.

It should also been noted that double-quoting a column/table name will make it
case-sensitive. Then, it is possible that the query does not pass even after the
double-quote operation ; the case would have to be checked by the user.

Finally, there is no attempt to fix column and table names (i.e. case
sensitivity and/or typos) using tables/columns list/metadata. That could be a
possible evolution of this function or an additional feature to implement in the
parser.

`org.json` was included in the sources of UWS-/TAP-Lib because of a manual
small correction. This is no longer needed. So this library is now a dependency
(included in the generated JAR). This has also been upgraded to the version of
August 2018.

_This commit aims to reproduce the original content of the Pull Request #38
 by @vforchi ._

_This commit fixes the GitHub issue #97 ._

_This commit fixes the GitHub issue #97 ._

The Gradle build file, the ANT build file and the README have also been updating
so that reflecting this upgrade as well as the migration from
com.oreilly.servlet to Apache Commons File Upload.

TAPLib versions of the former commit have also been fixed.

Until now, the generated VOTable file was un-readable even by
STIL/STILTS/TOPCAT. To fix this, it was needed to temporary store the table to
format into FITS so that STIL can read it at least 2 times.

_This commit fixes the GitHub issue #43 ._

_This commit completes the GitHub issue #106 ._

Quote file separator to avoid backslash failures in reg-exp (especially on a Windows-OS)

tables.

Since commit 3d96c9d9 aliases put on a table
without double quotes are put in lower case and then double quoted. This
modification was not effective for ORDER BY's column identifiers.

The previous commit broke some JUnit tests. It was indeed not any more possible
to prefix a column with the fully qualified table name
(e.g. `"aSchema"."aTable"`) if the table was automatically aliased. If an alias
is set on a table, this table should be referenced only by this alias. The
previous commit was not able to replace fully qualified table names with their
corresponding alias....and doing that would probably introduce other unexpected
parsing/checking behaviors.

So, it is better to keep this part of the parsing as simple as now. Just for few
DB error messages showing real database names (and only if they are different
from the ADQL ones), it does not worth _yet_ making the parsing more complex.

_This commit ends the issue #108 ._

(i.e. not a subquery).

The idea is to avoid ambiguous error messages coming from the database when
raising an error on a table or column name having different DB and ADQL names.

This commit sets by default an alias on each table reference. This default
alias is the ADQL table name as it is used in the ADQL query.

_This commit fixes the GitHub issue #108 ._

As @vforchi said:

> The ANSI standard `||` is supported only by Oracle and Postgres: MySQL uses
> `CONCAT` and SQLServer uses `+`.

_This commit resolves the issue #70 ._

Merge pull request #107 from vforchi/fix_content_length

UWSToolBox).

_ See GitHub Issue #100 _

commit.

`upload_max_file_size` and `upload_default_db_limit`.

In Java 8, implementing the function remove() of the interface Iterator<E> is
no longer required if not implemented. But not in Java 7.

The previous text formatting process was storing the entire table in memory....
hence OutOfMemoryError when dealing with large table.

Now, this process is done entirely in memory only for a table having less than
1000 lines. For a larger table, its content is stored in a temporary file. This
file is deleted after usage or in case of error.

This formatting process has been tested under JVM monitoring (both JConsole and
VisualVM) and tables larger than 3,000,000 rows, with success.

This commit fixes the GitHub issue #40

Before this fix, cancelling a TAP job (async or not) which was formatting the
result in ASCII may failed, especially for large results. This was due to a
non interruptible alignment process. This process is now checking whether a
cancellation has been requested before formatting a new result line/row ; if so,
the process is immediately stopped and the job can be cleaning declared as
aborted.

(see previous commit).

When defining in the configuration file a different name for TAP_SCHEMA content,
the service implementor was also forced to define the same mapping in the
database with the column `dbName`.

This is no longer necessary. From now on, the `dbName` column will be ignored
for all standard TAP_SCHEMA content. Instead, the name specified in the
configuration file (if any) will be used instead. This way, the mapping for
standard TAP_SCHEMA content is only specified once and at only one place:
the configuration file.

_This commit resolves the GitHub issue #98_

file (actually, replaces the real backup file by the temporary one).

Sometimes a temporary backup file (i.e. a file named like `*.backup.temp-*`) is
not deleted. This means that the log rotation fails and that, potentially, some
jobs have not been updated/deleted. This commit is there is re-enforce the
replacement operation.

The property `upload_default_db_limit` has been deprecated. Indeed, in the
current state of the TAP protocol, this makes no sense: the user can not change
the limit size (in bytes or rows) for uploaded tables.

The property `upload_max_file_size` has been deprecated. It is actually
duplicated: `upload_max_db_limit`, if expressed in bytes already lets put a
limit on the maximum size of an uploaded table/file.

The property `upload_max_request_size` has been added. It lets set a maximum
size for a whole HTTP Multipart Request. By default it is set to 250MB.

The default value of `upload_max_db_size` is now 1 million rows.

The UPLOAD feature is still disabled by default (i.e. `upload_enabled=false`).

This bug occurred "just" due to an un-desired inverted test, since UWS-1.1 is
implemented (UWSLib-4.3 and TAPLib-2.2).

Thus, the UPLOAD management is much more stable and relies on a well documented
and maintained library (but at the cost of the additionnal size of the final
JAR). The most important point is the capability to efficiently limit the size
of the incoming file and on the disk/memory management when uploading the
file(s) and in case of error during this process (i.e. files must be deleted).

[UWS,TAP] Add the dependency SLF4J in `lib/`. Follow-up to 5f18ac69.

attribute.

In this way, it is possible to run two different instances of a UWS/TAP service
with a different temporary directory in the same JVM.

The attribute `version` in the node `job` is never restored ; it is just
informative. Thus, it is now silently ignored.

The attribute `length` of an upload was badly spelled.

The attribute `mime-type` of a result was backuped as `mime-type` but restored
as `mime`. Hence the absence of this piece of information when restoring a job.

_This latter will soon be removed from UWSLib._

Before correction, if two uploaded tables have been submitted by the user with
the same name, or if one uploaded table contained duplicated column names, an
obscure error message coming from the database was returned to the user.

Now, duplicated items (tables and columns) are searched before ingestion in the
database. When one is detected, an error is immediately returned to the user and
the query is aborted.

Files uploaded by the user when creating/executing a synchronous job were never
deleted after the job execution.

The same problem applied for the tables already uploaded in the database (in
`TAP_UPLOAD`) when an error occurred before the end of the UPLOAD process.

Now, in case of error when uploading one or more files, or in case of success of
the job, all uploaded files and their corresponding database tables are deleted
after the end of the job.