Constraint trigger impl

[noeliaarcadiaconsulting]

Implementation for support of CONTRAINT option in TRIGGERS:
-Modified PATTERN_CREATE_TRIGGER for CONSTRAINT option support for TRIGGER
-Modified CreateTriggerParser.java for CONSTRAINT support for TRIGGER with EventTimeQualification expected AFTER and optionaly { NOT DEFERRABLE | [ DEFERRABLE ] { INITIALLY IMMEDIATE | INITIALLY DEFERRED } }
-Modified PgTrigger.java for CONSTRAINT options support in sql statement for TRIGGER.

[chadfurman]

This builds on your other PR, yes?

I won't have time to pull this down and test it for a little while. Would love help with the review...

[noeliaarcadiaconsulting]

The other PR (Oldrelation delete triggers) builds on this one. So, Oldrelation delete triggers PR contains all the changes made.
What do you need help with?

[chadfurman]

@noeliaarcadiaconsulting I need someone who isn't the PR author to review this PR and say it looks good.

I also think there might be a need for some tests. Not sure what the state of testing is in this repo

The PR generally looks good, so I'm just after some additional sign-off w.r.t. compilation and general code structure. Someone, preferrably, who knows Java and has read all the code in this PR

[jalissonmello]

Hi,
Still need one more to help with tests ? I' am interested to put the changes on main branch