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SQL ログを出力する

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conf/application.conf で以下の設定を有効化すると、playframework が実行する SQL ログをコンソールに出力することができます。

# Debug SQL statements (logged using DEBUG level):
jpa.debugSQL=true

ただ、これだけではバインドされた変数の値は分かりません。こちらは conf/application.conflog4j.properties に Hibernate のオプションを指定することで出力することができます。

# You can even specify additional hibernate properties here:
# hibernate.use_sql_comments=true
# ...
hibernate.show_sql=true
hibernate.format_sql=true
hibernate.use_sql_comments=true
log4j.logger.org.hibernate=INFO, hb
log4j.logger.org.hibernate.SQL=DEBUG
log4j.logger.org.hibernate.type=TRACE
log4j.logger.org.hibernate.hql.ast.AST=info
log4j.logger.org.hibernate.tool.hbm2ddl=warn
log4j.logger.org.hibernate.hql=debug
log4j.logger.org.hibernate.cache=info
log4j.logger.org.hibernate.jdbc=debug

log4j.appender.hb=org.apache.log4j.ConsoleAppender
log4j.appender.hb.layout=org.apache.log4j.PatternLayout
log4j.appender.hb.layout.ConversionPattern=HibernateLog --> %d{HH:mm:ss} %-5p %c - %m%n
log4j.appender.hb.Threshold=TRACE

参考

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