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SqliteTriggerTemplate.c
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SqliteTriggerTemplate.c
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/**
* Licensed to JumpMind Inc under one or more contributor
* license agreements. See the NOTICE file distributed
* with this work for additional information regarding
* copyright ownership. JumpMind Inc licenses this file
* to you under the GNU General Public License, version 3.0 (GPLv3)
* (the "License"); you may not use this file except in compliance
* with the License.
*
* You should have received a copy of the GNU General Public License,
* version 3.0 (GPLv3) along with this library; if not, see
* <http://www.gnu.org/licenses/>.
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
#include "db/sqlite/SqliteTriggerTemplate.h"
char * SymSqliteTriggerTemplate_fillOutColumnTemplate(SymSqliteTriggerTemplate *this,
char *origTableAlias, char *tableAlias,
char *columnPrefix, SymColumn *column, SymDataEventType dml, unsigned short isOld,
SymChannel *channel, SymTrigger *trigger) {
char *templateToUse;
switch (column->sqlType) {
case SYM_SQL_TYPE_BIT:
case SYM_SQL_TYPE_BOOLEAN:
templateToUse = "case when %s.%s is null then '' when %s.%s = 1 then '\"1\"' else '\"0\"' end";
break;
case SYM_SQL_TYPE_TINYINT:
case SYM_SQL_TYPE_SMALLINT:
case SYM_SQL_TYPE_INTEGER:
case SYM_SQL_TYPE_BIGINT:
case SYM_SQL_TYPE_FLOAT:
case SYM_SQL_TYPE_DOUBLE:
case SYM_SQL_TYPE_NUMERIC:
case SYM_SQL_TYPE_DECIMAL:
case SYM_SQL_TYPE_REAL:
templateToUse = "case when %s.%s is null then '' else ('\"' || cast(%s.%s as varchar) || '\"') end";
break;
case SYM_SQL_TYPE_CHAR:
case SYM_SQL_TYPE_NCHAR:
case SYM_SQL_TYPE_VARCHAR:
case SYM_SQL_TYPE_NVARCHAR:
case SYM_SQL_TYPE_CLOB:
case SYM_SQL_TYPE_LONGVARCHAR:
case SYM_SQL_TYPE_LONGNVARCHAR:
templateToUse = "case when %s.%s is null then '' else '\"' || replace(replace(%s.%s,'\\','\\\\'),'\"','\\\"') || '\"' end";
break;
case SYM_SQL_TYPE_BLOB:
case SYM_SQL_TYPE_LONGVARBINARY:
templateToUse = "case when %s.%s is null then '' else '\"' || replace(replace(hex(%s.%s),'\\','\\\\'),'\"','\\\"') || '\"' end ";
break;
case SYM_SQL_TYPE_DATE:
case SYM_SQL_TYPE_TIMESTAMP:
case SYM_SQL_TYPE_TIME:
templateToUse = "case when strftime('%%Y-%%m-%%d %%H:%%M:%%f',%s.%s) is null then '' else ('\"' || strftime('%%Y-%%m-%%d %%H:%%M:%%f', %s.%s) || '\"') end";
break;
default:
templateToUse = NULL;
SymLog_error("Unknown sqlType %d", column->sqlType);
break;
}
char* columnName = column->name;
char* formattedColumnText =
SymStringUtils_format(templateToUse, tableAlias, columnName, tableAlias, columnName);
return formattedColumnText;
}
char * SymSqliteTriggerTemplate_buildColumnsString(SymSqliteTriggerTemplate *this, char *origTableAlias, char *tableAlias,
char *columnPrefix, SymList *columns, SymDataEventType dml, unsigned int isOld,
SymChannel *channel, SymTrigger *trigger) {
char *lastCommandToken = "||','||";
SymStringBuilder *buff = SymStringBuilder_new(NULL);
int i;
for (i = 0; i < columns->size; i++) {
SymColumn *column = columns->get(columns, i);
char *columnString = SymSqliteTriggerTemplate_fillOutColumnTemplate(this, origTableAlias,
tableAlias, columnPrefix, column, dml, isOld, channel, trigger);
buff->append(buff, columnString);
buff->append(buff, "\n");
if (i < (columns->size-1)) {
buff->append(buff, lastCommandToken);
}
}
return buff->destroyAndReturn(buff);
}
char * SymSqliteTriggerTemplate_replaceTemplateVariables(SymSqliteTriggerTemplate *this, SymDataEventType dml,
SymTrigger *trigger, SymTriggerHistory *history, SymChannel *channel, char *tablePrefix,
SymTable *table, char *defaultCatalog, char *defaultSchema, char *ddl) {
SymList *primaryKeyColumns = table->getPrimaryKeyColumns(table);
char *triggerName = history->getTriggerNameForDmlType(history, dml);
char *schemaName = "";
char *tableName = table->name;
char *syncOnInsertCondition = "1"; // TODO
char *syncOnUpdateCondition = "1"; // TODO
char *syncOnDeleteCondition = "1"; // TODO
char *syncOnIncomingBatchCondition = "1"; // TODO
char *targetTableName = trigger->sourceTableName; // TODO
char *triggerHistoryId = SymStringUtils_format("%d", history == NULL ? -1 : history->triggerHistoryId);
char *oldKeys = SymSqliteTriggerTemplate_buildColumnsString(this, SYM_ORIG_TABLE_ALIAS,
"old", "", primaryKeyColumns, dml, 1, channel, trigger);
char *oldColumns = trigger->useCaptureOldData ? SymSqliteTriggerTemplate_buildColumnsString(this, SYM_ORIG_TABLE_ALIAS,
"old", "old", table->columns, dml, 1, channel, trigger) : SymStringUtils_format("%s", "null");
char *columns = SymSqliteTriggerTemplate_buildColumnsString(this, SYM_ORIG_TABLE_ALIAS,
"new", "", table->columns, dml, 0, channel, trigger);
char *channelExpression = SymStringUtils_format("'%s'", trigger->channelId); // TODO
char *sourceNodeExpression = "null"; // TODO
char *externalSelect = "null"; // TODO
char *custom_on_insert_text = ""; // TODO
char *custom_on_update_text = ""; // TODO
char *custom_on_delete_text = ""; // TODO
char *formattedDdl = NULL;
if (dml == SYM_DATA_EVENT_INSERT) {
formattedDdl = SymStringUtils_format(ddl, triggerName, schemaName, tableName, syncOnInsertCondition,
syncOnIncomingBatchCondition, targetTableName, triggerHistoryId, columns, channelExpression, sourceNodeExpression,
externalSelect, custom_on_insert_text);
} else if (dml == SYM_DATA_EVENT_UPDATE) {
formattedDdl = SymStringUtils_format(ddl, triggerName, schemaName, tableName, syncOnUpdateCondition,
syncOnIncomingBatchCondition, targetTableName, triggerHistoryId, oldKeys, columns, oldColumns, channelExpression, sourceNodeExpression,
externalSelect, custom_on_update_text);
}
else if (dml == SYM_DATA_EVENT_DELETE) {
formattedDdl = SymStringUtils_format(ddl, triggerName, schemaName, tableName, syncOnDeleteCondition,
syncOnIncomingBatchCondition, targetTableName, triggerHistoryId, oldKeys, oldColumns, channelExpression, sourceNodeExpression,
externalSelect, custom_on_delete_text);
}
free(triggerHistoryId);
free(oldKeys);
free(oldColumns);
free(columns);
free(channelExpression);
return formattedDdl;
}
char * SymSqliteTriggerTemplate_createTriggerDDL(SymSqliteTriggerTemplate *this, SymDataEventType dml,
SymTrigger *trigger, SymTriggerHistory *history, SymChannel *channel, char *tablePrefix,
SymTable *originalTable, char *defaultCatalog, char *defaultSchema) {
char *ddl = NULL;
if (dml == SYM_DATA_EVENT_INSERT) {
ddl = SYM_SQL_SQLITE_INSERT_TRIGGER_TEMPLATE;
} else if (dml == SYM_DATA_EVENT_UPDATE) {
ddl = SYM_SQL_SQLITE_UPDATE_TRIGGER_TEMPLATE;
} else if (dml == SYM_DATA_EVENT_DELETE) {
ddl = SYM_SQL_SQLITE_DELETE_TRIGGER_TEMPLATE;
} else {
SymLog_error("Unknown dml %d", dml);
}
char *formattedDdl = SymSqliteTriggerTemplate_replaceTemplateVariables(this, dml,
trigger, history, channel, tablePrefix, originalTable, defaultCatalog,
defaultSchema, ddl);
return formattedDdl;
}
long SymSqliteTriggerTemplate_toHashedValue(SymSqliteTriggerTemplate *this) {
long hashCode = SymStringBuilder_hashCode(SYM_SQL_SQLITE_INSERT_TRIGGER_TEMPLATE);
hashCode += SymStringBuilder_hashCode(SYM_SQL_SQLITE_UPDATE_TRIGGER_TEMPLATE);
hashCode += SymStringBuilder_hashCode(SYM_SQL_SQLITE_DELETE_TRIGGER_TEMPLATE);
return hashCode;
}
void SymSqliteTriggerTemplate_destroy(SymSqliteTriggerTemplate *this) {
free(this);
}
SymSqliteTriggerTemplate * SymSqliteTriggerTemplate_new(SymSqliteTriggerTemplate *this) {
if (this == NULL) {
this = (SymSqliteTriggerTemplate *) calloc(1, sizeof(SymSqliteTriggerTemplate));
}
SymTriggerTemplate_new(&this->super);
SymTriggerTemplate *super = &this->super;
super->createTriggerDDL = (void *) &SymSqliteTriggerTemplate_createTriggerDDL;
super->toHashedValue = (void *) &SymSqliteTriggerTemplate_toHashedValue;
super->destroy = (void *) &SymSqliteTriggerTemplate_destroy;
return this;
}