Caused by: java.lang.NullPointerException
	at javassist.CtClassType.getFieldsCache(CtClassType.java:784)
	at javassist.CtClassType.getDeclaredFields(CtClassType.java:770)
	at org.seasar.framework.util.ClassUtil.getDeclaredFields(ClassUtil.java:361)
	at org.seasar.extension.jdbc.meta.EntityMetaFactoryImpl.getFields(EntityMetaFactoryImpl.java:243)
	at org.seasar.extension.jdbc.meta.EntityMetaFactoryImpl.doPropertyMeta(EntityMetaFactoryImpl.java:213)
	at org.seasar.extension.jdbc.meta.EntityMetaFactoryImpl.createEntityMeta(EntityMetaFactoryImpl.java:142)
	at org.seasar.extension.jdbc.meta.EntityMetaFactoryImpl.getEntityMetaInternal(EntityMetaFactoryImpl.java:117)
	at org.seasar.extension.jdbc.meta.EntityMetaFactoryImpl.checkMappedBy(EntityMetaFactoryImpl.java:308)
	at org.seasar.extension.jdbc.meta.EntityMetaFactoryImpl.resolveRelationship(EntityMetaFactoryImpl.java:285)
	at org.seasar.extension.jdbc.meta.EntityMetaFactoryImpl.getEntityMeta(EntityMetaFactoryImpl.java:97)
	at org.seasar.extension.jdbc.query.AutoSelectImpl.prepareEntityMeta(AutoSelectImpl.java:513)
	at org.seasar.extension.jdbc.query.AutoSelectImpl.prepareTarget(AutoSelectImpl.java:369)
	at org.seasar.extension.jdbc.query.AutoSelectImpl.prepare(AutoSelectImpl.java:352)
	at org.seasar.extension.jdbc.query.AbstractSelect.getSingleResult(AbstractSelect.java:179)