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/*******************************************************************************
* Copyright (c) 2012 Boeing.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Boeing - initial API and implementation
*******************************************************************************/
package org.eclipse.osee.orcs.db.internal.change;
import java.util.Collection;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import org.eclipse.osee.framework.core.enums.ModificationType;
import org.eclipse.osee.framework.core.enums.TxChange;
import org.eclipse.osee.framework.core.model.change.ChangeItem;
import org.eclipse.osee.framework.core.model.change.ChangeVersion;
import org.eclipse.osee.framework.jdk.core.type.OseeCoreException;
import org.eclipse.osee.framework.jdk.core.util.Conditions;
import org.eclipse.osee.jdbc.JdbcClient;
import org.eclipse.osee.jdbc.JdbcConstants;
import org.eclipse.osee.jdbc.JdbcStatement;
import org.eclipse.osee.logger.Log;
import org.eclipse.osee.orcs.OrcsSession;
import org.eclipse.osee.orcs.db.internal.callable.AbstractDatastoreCallable;
import org.eclipse.osee.orcs.db.internal.change.ChangeItemLoader.ChangeItemFactory;
import org.eclipse.osee.orcs.db.internal.sql.RelationalConstants;
import org.eclipse.osee.orcs.db.internal.sql.join.IdJoinQuery;
import org.eclipse.osee.orcs.db.internal.sql.join.SqlJoinFactory;
import org.eclipse.osee.orcs.db.internal.sql.join.TransactionJoinQuery;
/**
* @author Ryan D. Brooks
* @author Roberto E. Escobar
* @author Ryan Schmitt
* @author Jeff C. Phillips
*/
public class LoadDeltasBetweenBranches extends AbstractDatastoreCallable<List<ChangeItem>> {
private static final String SELECT_SOURCE_BRANCH_CHANGES =
"select gamma_id, mod_type from osee_txs txs where txs.branch_id = ? and txs.tx_current <> ? and txs.transaction_id <> ? AND NOT EXISTS (SELECT 1 FROM osee_txs txs1 WHERE txs1.branch_id = ? AND txs1.transaction_id = ? AND txs1.gamma_id = txs.gamma_id and txs1.mod_type = txs.mod_type)";
private static final String SELECT_BASE_TRANSACTION =
"select baseline_transaction_id from osee_branch where branch_id = ?";
private final HashMap<Long, ModificationType> changeByGammaId = new HashMap<Long, ModificationType>();
private final Long sourceBranchId, destinationBranchId, mergeBranchId;
private final Integer destinationHeadTxId, mergeTxId;
private final ChangeItemLoader changeItemLoader;
private final SqlJoinFactory joinFactory;
public LoadDeltasBetweenBranches(Log logger, OrcsSession session, JdbcClient jdbcClient, SqlJoinFactory joinFactory, Long sourceBranchId, Long destinationBranchId, Integer destinationHeadTxId, Long mergeBranchId, Integer mergeTxId) {
super(logger, session, jdbcClient);
this.joinFactory = joinFactory;
this.sourceBranchId = sourceBranchId;
this.destinationBranchId = destinationBranchId;
this.destinationHeadTxId = destinationHeadTxId;
this.mergeBranchId = mergeBranchId;
this.mergeTxId = mergeTxId;
this.changeItemLoader = new ChangeItemLoader(jdbcClient, changeByGammaId);
}
private boolean hasMergeBranch() {
return mergeBranchId != null;
}
private int getSourceBaselineTxId() {
return getBaseTxId(sourceBranchId);
}
@Override
public List<ChangeItem> call() throws Exception {
List<ChangeItem> changeData = new LinkedList<ChangeItem>();
Conditions.checkExpressionFailOnTrue(sourceBranchId.equals(destinationBranchId),
"Unable to compute deltas between transactions on the same branch [%s]", sourceBranchId);
TransactionJoinQuery txJoin = joinFactory.createTransactionJoinQuery();
int sourceBaselineTxId = getSourceBaselineTxId();
loadSourceBranchChanges(txJoin, sourceBaselineTxId);
int txJoinId = txJoin.getQueryId();
try {
loadByItemId(changeData, txJoinId, changeItemLoader.createArtifactChangeItemFactory(), sourceBaselineTxId);
loadByItemId(changeData, txJoinId, changeItemLoader.createAttributeChangeItemFactory(), sourceBaselineTxId);
loadByItemId(changeData, txJoinId, changeItemLoader.createRelationChangeItemFactory(), sourceBaselineTxId);
} finally {
try {
txJoin.delete();
} finally {
changeByGammaId.clear();
}
}
return changeData;
}
private void loadSourceBranchChanges(TransactionJoinQuery txJoin, int sourceBaselineTxId) throws OseeCoreException {
JdbcStatement chStmt = getJdbcClient().getStatement();
try {
chStmt.runPreparedQuery(JdbcConstants.JDBC__MAX_FETCH_SIZE, SELECT_SOURCE_BRANCH_CHANGES, sourceBranchId,
TxChange.NOT_CURRENT.getValue(), sourceBaselineTxId, sourceBranchId, sourceBaselineTxId);
while (chStmt.next()) {
checkForCancelled();
Long gammaId = chStmt.getLong("gamma_id");
ModificationType modType = ModificationType.getMod(chStmt.getInt("mod_type"));
txJoin.add(gammaId, -1);
changeByGammaId.put(gammaId, modType);
}
txJoin.store();
} finally {
chStmt.close();
}
}
private void loadByItemId(Collection<ChangeItem> changeData, int txJoinId, ChangeItemFactory factory, int sourceBaselineTxId) throws OseeCoreException {
HashMap<Integer, ChangeItem> changesByItemId = new HashMap<Integer, ChangeItem>();
IdJoinQuery idJoin = joinFactory.createIdJoinQuery();
try {
changeItemLoader.loadItemIdsBasedOnGammas(factory, txJoinId, changesByItemId, idJoin);
idJoin.store();
if (hasMergeBranch()) {
loadCurrentData(factory.getItemTableName(), factory.getItemIdColumnName(), idJoin, changesByItemId,
mergeBranchId, mergeTxId, true);
}
loadCurrentData(factory.getItemTableName(), factory.getItemIdColumnName(), idJoin, changesByItemId,
destinationBranchId, destinationHeadTxId, false);
loadNonCurrentSourceData(factory.getItemTableName(), factory.getItemIdColumnName(), idJoin, changesByItemId,
factory.getItemValueColumnName(), sourceBaselineTxId);
changeData.addAll(changesByItemId.values());
} finally {
idJoin.delete();
}
}
private void loadCurrentData(String tableName, String columnName, IdJoinQuery idJoin, HashMap<Integer, ChangeItem> changesByItemId, Long txBranchId, Integer txId, boolean isMergeBranch) throws OseeCoreException {
JdbcStatement chStmt = getJdbcClient().getStatement();
try {
String query = "select txs.gamma_id, txs.mod_type, item." + columnName + " from osee_join_id idj, " //
+ tableName + " item, osee_txs txs where idj.query_id = ? and idj.id = item." + columnName + //
" and item.gamma_id = txs.gamma_id and txs.tx_current <> ? and txs.branch_id = ? and txs.transaction_id <= ?";
chStmt.runPreparedQuery(JdbcConstants.JDBC__MAX_FETCH_SIZE, query, idJoin.getQueryId(),
TxChange.NOT_CURRENT.getValue(), txBranchId, txId);
while (chStmt.next()) {
checkForCancelled();
Integer itemId = chStmt.getInt(columnName);
Long gammaId = chStmt.getLong("gamma_id");
ChangeItem change = changesByItemId.get(itemId);
if (isMergeBranch) {
change.getNetChange().setGammaId(gammaId);
change.getNetChange().setModType(ModificationType.MERGED);
} else {
change.getDestinationVersion().setModType(ModificationType.getMod(chStmt.getInt("mod_type")));
change.getDestinationVersion().setGammaId(gammaId);
}
}
} finally {
chStmt.close();
}
}
private void loadNonCurrentSourceData(String tableName, String idColumnName, IdJoinQuery idJoin, HashMap<Integer, ChangeItem> changesByItemId, String columnValueName, int sourceBaselineTxId) throws OseeCoreException {
JdbcStatement chStmt = getJdbcClient().getStatement();
String query;
try {
String valueColumnName = columnValueName != null ? "item." + columnValueName + "," : "";
query =
"select " + valueColumnName + "item." + idColumnName + ", txs.gamma_id, txs.mod_type, txs.transaction_id from osee_join_id idj, " //
+ tableName + " item, osee_txs txs where idj.query_id = ? and idj.id = item." + idColumnName + //
" and item.gamma_id = txs.gamma_id and txs.tx_current = ? and txs.branch_id = ? order by idj.id, txs.transaction_id asc";
chStmt.runPreparedQuery(JdbcConstants.JDBC__MAX_FETCH_SIZE, query, idJoin.getQueryId(),
TxChange.NOT_CURRENT.getValue(), sourceBranchId);
int previousItemId = -1;
boolean isFirstSet = false;
while (chStmt.next()) {
checkForCancelled();
int itemId = chStmt.getInt(idColumnName);
Integer transactionId = chStmt.getInt("transaction_id");
ModificationType modType = ModificationType.getMod(chStmt.getInt("mod_type"));
Long gammaId = chStmt.getLong("gamma_id");
String value = null;
if (columnValueName != null) {
value = chStmt.getString(columnValueName);
}
ChangeItem change = changesByItemId.get(itemId);
if (previousItemId != itemId) {
isFirstSet = false;
}
if (sourceBaselineTxId == transactionId) {
setVersionData(change.getBaselineVersion(), gammaId, modType, value);
} else if (!isFirstSet) {
setVersionData(change.getFirstNonCurrentChange(), gammaId, modType, value);
isFirstSet = true;
}
previousItemId = itemId;
}
} finally {
chStmt.close();
}
}
private void setVersionData(ChangeVersion versionedChange, Long gammaId, ModificationType modType, String value) {
// Tolerates the case of having more than one version of an item on a
// baseline transaction by picking the most recent one
if (versionedChange.getGammaId() == null || versionedChange.getGammaId().compareTo(gammaId) < 0) {
versionedChange.setValue(value);
versionedChange.setModType(modType);
versionedChange.setGammaId(gammaId);
}
}
private int getBaseTxId(long branchId) throws OseeCoreException {
return getJdbcClient().runPreparedQueryFetchObject(RelationalConstants.TRANSACTION_SENTINEL,
SELECT_BASE_TRANSACTION, branchId);
}
}
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