/
DerbyDbDialect.java
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/
DerbyDbDialect.java
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/*
* SymmetricDS is an open source database synchronization solution.
*
* Copyright (C) Eric Long <erilong@users.sourceforge.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see
* <http://www.gnu.org/licenses/>.
*/
package org.jumpmind.symmetric.db.derby;
import org.apache.commons.lang.StringUtils;
import org.jumpmind.symmetric.db.AbstractDbDialect;
import org.jumpmind.symmetric.db.BinaryEncoding;
import org.jumpmind.symmetric.db.IDbDialect;
import org.jumpmind.symmetric.model.Trigger;
public class DerbyDbDialect extends AbstractDbDialect implements IDbDialect {
@Override
protected void initForSpecificDialect() {
}
@Override
protected boolean doesTriggerExistOnPlatform(String catalog, String schema, String tableName, String triggerName) {
schema = schema == null ? (getDefaultSchema() == null ? null : getDefaultSchema()) : schema;
return jdbcTemplate.queryForInt("select count(*) from sys.systriggers where triggername = ?",
new Object[] { triggerName.toUpperCase() }) > 0;
}
@Override
public boolean supportsTransactionId() {
return true;
}
@Override
public boolean isBlobSyncSupported() {
return true;
}
@Override
public boolean isClobSyncSupported() {
return true;
}
@Override
public BinaryEncoding getBinaryEncoding() {
return BinaryEncoding.BASE64;
}
public void disableSyncTriggers(String nodeId) {
jdbcTemplate.queryForInt(String.format("values %s_sync_triggers_set_disabled(1)", tablePrefix));
if (nodeId != null) {
jdbcTemplate.queryForObject(String.format("values %s_sync_node_set_disabled('%s')", tablePrefix, nodeId),
String.class);
}
}
public void enableSyncTriggers() {
jdbcTemplate.queryForInt(String.format("values %s_sync_triggers_set_disabled(0)", tablePrefix));
jdbcTemplate.queryForInt(String.format("values %s_sync_node_set_disabled(null)", tablePrefix));
}
public String getSyncTriggersExpression() {
return String.format("%s_sync_triggers_disabled() = 0", tablePrefix);
}
@Override
public String getTransactionTriggerExpression(String defaultCatalog, String defaultSchema, Trigger trigger) {
return String.format("%s_transaction_id()", tablePrefix);
}
@Override
public String getSelectLastInsertIdSql(String sequenceName) {
return "values IDENTITY_VAL_LOCAL()";
}
public boolean isCharSpacePadded() {
return true;
}
public boolean isCharSpaceTrimmed() {
return false;
}
public boolean isEmptyStringNulled() {
return false;
}
@Override
public boolean storesUpperCaseNamesInCatalog() {
return true;
}
@Override
public boolean supportsGetGeneratedKeys() {
return false;
}
@Override
protected boolean allowsNullForIdentityColumn() {
return false;
}
public void purge() {
}
public String getDefaultCatalog() {
return null;
}
@Override
public String getDefaultSchema() {
if (StringUtils.isBlank(this.defaultSchema)) {
defaultSchema = (String) jdbcTemplate.queryForObject("values CURRENT SCHEMA", String.class);
}
return defaultSchema;
}
@Override
public void truncateTable(String tableName) {
jdbcTemplate.update("delete from " + tableName);
}
}