cayenne-dbsync/src/main/java/org/apache/cayenne/dbsync/merge/factory/HSQLMergerTokenFactory.java [70:81]:
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    public MergerToken createSetPrimaryKeyToDb(DbEntity entity, Collection<DbAttribute> primaryKeyOriginal,
            Collection<DbAttribute> primaryKeyNew, String detectedPrimaryKeyName) {
        return new SetPrimaryKeyToDb(entity, primaryKeyOriginal, primaryKeyNew, detectedPrimaryKeyName) {

            @Override
            protected void appendDropOriginalPrimaryKeySQL(DbAdapter adapter, List<String> sqls) {
                sqls.add("ALTER TABLE " + adapter.getQuotingStrategy().quotedFullyQualifiedName(getEntity())
                        + " DROP PRIMARY KEY");
            }

        };
    }
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cayenne-dbsync/src/main/java/org/apache/cayenne/dbsync/merge/factory/H2MergerTokenFactory.java [71:82]:
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    public MergerToken createSetPrimaryKeyToDb(DbEntity entity, Collection<DbAttribute> primaryKeyOriginal,
            Collection<DbAttribute> primaryKeyNew, String detectedPrimaryKeyName) {
        return new SetPrimaryKeyToDb(entity, primaryKeyOriginal, primaryKeyNew, detectedPrimaryKeyName) {

            @Override
            protected void appendDropOriginalPrimaryKeySQL(DbAdapter adapter, List<String> sqls) {
                sqls.add("ALTER TABLE " + adapter.getQuotingStrategy().quotedFullyQualifiedName(getEntity())
                        + " DROP PRIMARY KEY");
            }

        };
    }
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