python - sqlalchemy, postgresql and relationship stuck in "idle in transaction" -

-

i have problem related sqlalchemy , postgresql.

class profile(base):   ...    roles = relationship('role', secondary=role_profiles,                        backref='profiles', lazy='dynamic')

when running (current_user instance of profile class):

roles = current_user.roles.filter().all()

using sqlalchemy idle in transaction selects reading profile in postgresql.

edit:

from echoing query see every select starts with:

begin (implicit)

another edit:

after adding

pool_size=20, max_overflow=0

to create_engine seems idle in transaction-statements being rolled when number of idle getting big. idea on , bad solution problem?

how manage , how go getting rid of begin selects?

starting sqlalchemy 0.8.2 can disable implicit begin statements when calling create_engine()

engine = create_engine(uri, isolation_level="autocommit")

there subtle implications change. first, there statements not quietly hid in unterminated transaction quietly ignored

session.execute("delete department department_id=18") sys.exit(0)

default:

log:  statement: begin log:  statement: show standard_conforming_strings log:  statement: delete department department_id=18 log:  unexpected eof on client connection open transaction

autocommit:

log:  statement: show standard_conforming_strings log:  statement: delete department department_id=18

second, updating multiple updates no longer automic, , rollback() conditionally effective:

department = department(u"hr") session.add(department) session.flush() employee = employee(department.department_id, u'bob') session.add(employee) session.rollback()

default:

log:  statement: begin log:  statement: insert department (name) values ('hr') returning department.department_id log:  statement: rollback

autocommit:

log:  statement: insert department (name) values ('hr') returning department.department_id

setting sqlalchemy's isolation_level on engine object effective many applications. unfortunate session.begin() not mean begin transaction;


Comments

Post a Comment

Popular posts from this blog

c++ - Linked List error when inserting for the last time -

-
so have part of code here this loop 5 times (max = 5) insert word link list. for ( int = 0 ; < max ; i++ ) { string alphabet = g->returnalphabets(); l[i]->addwords(alphabet[i]); } and have insert word part here string line; fstream myfile ("words.txt"); while (!myfile.eof()) { getline(myfile,line); if ( alphabet == line[0] ) { listnode *newnode = new listnode; if ( head == null ) { newnode->item = alphabet; newnode->next = null; head = newnode; } else { newnode->item = line; prev = cur; prev->next = newnode; } cur = newnode; } } myfile.close(); my problem gives me error on last loop. meaning on max = 4, insert node. rest of loop fine. when decrease max 4 meaning loop 4 times, program error-free when program loops 5 times gives error. anyone can poin...
Read more

java - activate/deactivate sonar maven plugin by profile? -

-
i use sonar plugin executes if activated in maven profile. sonar runs on every compile. the problem build fail other team members not have sonar application installed locally. pom.xml checked in team members same copy including sonar configuration, don't want them modify purpose of disabling sonar (they might inadvertently check modified copy in). please advise how configure maven (.m2/settings.xml) and/or pom.xml sonar feature can enabled/disabled local profile. here sonar configuration in each project's pom.xml: <plugin> <groupid>org.codehaus.mojo</groupid> <artifactid>sonar-maven-plugin</artifactid> <version>1.0</version> <executions> <execution> <id>make-sonar</id> <phase>compile</phase> <goals> <goal>sonar</goal> </goals> </execution> </executions> ...
Read more

xml - How do I use an xdoxslt variable inside xsl code, in BI Publisher? -

-
i trying create loop increments variable, use variable inside of xsl code. here code using increment counter: <?xdoxslt:set_variable($_xdoctx, ‘counter’, 0)?> <?for-each-group:$g2;./status?> <?sort:current-group()/status;'ascending';data-type='text'?> <?xdoxslt:set_variable($_xdoctx, ‘counter’, xdoxslt:get_variable($_xdoctx, ‘counter’) + count(xdoxslt:distinct_values(current-group()/action)))?> <?end for-each-group?> the following code output number need: <xsl:value-of select="xdoxslt:get_variable($_xdoctx, ‘counter’)"/> so know loop working , variable has correct number. however, need use variable in following code: <xsl:attribute name="number-rows-spanned" xdofo:ctx="block"> <xsl:value-of select="xdoxslt:get_variable($_xdoctx, ‘counter’)"/> </xsl:attribute> when use code following error: java.lang.numberformatexception: input string: "" i...
Read more