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Use the combination of batch ID and contact ID as the primary key for

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received and sent batches, since batches sent to or received from
different contacts may contain identical lists of messages and
therefore have identical IDs.
This commit is contained in:
akwizgran
2011-08-01 17:37:48 +01:00
parent 02c4d9197c
commit 8e8c83b83c
1 changed files with 4 additions and 5 deletions
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9
components/net/sf/briar/db/JdbcDatabase.java
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@@ -93,7 +93,7 @@ abstract class JdbcDatabase implements Database<Connection> {
"CREATE TABLE batchesToAck"
+ " (batchId HASH NOT NULL,"
+ " contactId INT NOT NULL,"
+ " PRIMARY KEY (batchId),"
+ " PRIMARY KEY (batchId, contactId),"
+ " FOREIGN KEY (contactId) REFERENCES contacts (contactId)"
+ " ON DELETE CASCADE)";
@@ -113,7 +113,7 @@ abstract class JdbcDatabase implements Database<Connection> {
+ " contactId INT NOT NULL,"
+ " timestamp TIMESTAMP NOT NULL,"
+ " passover INT NOT NULL,"
+ " PRIMARY KEY (batchId),"
+ " PRIMARY KEY (batchId, contactId),"
+ " FOREIGN KEY (contactId) REFERENCES contacts (contactId)"
+ " ON DELETE CASCADE)";
@@ -123,9 +123,8 @@ abstract class JdbcDatabase implements Database<Connection> {
+ " contactId INT NOT NULL,"
+ " messageId HASH NOT NULL,"
+ " PRIMARY KEY (batchId, messageId),"
+ " FOREIGN KEY (batchId) REFERENCES outstandingBatches (batchId)"
+ " ON DELETE CASCADE,"
+ " FOREIGN KEY (contactId) REFERENCES contacts (contactId)"
+ " FOREIGN KEY (batchId, contactId)"
+ " REFERENCES outstandingBatches (batchId, contactId)"
+ " ON DELETE CASCADE,"
+ " FOREIGN KEY (messageId) REFERENCES messages (messageId)"
+ " ON DELETE CASCADE)";