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NIFI-2323: Fixed Oracle timestamp handling in DB fetch processors. This closes #1664.

This commit is contained in:
Matt Burgess 2017-04-17 22:40:47 -04:00 committed by Mark Payne
parent 995c7ce2fa
commit 9ed001869b
2 changed files with 22 additions and 22 deletions
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30
nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/main/java/org/apache/nifi/processors/standard/AbstractDatabaseFetchProcessor.java
View File

@ -351,27 +351,21 @@ public abstract class AbstractDatabaseFetchProcessor extends AbstractSessionFact
break;
case TIMESTAMP:
// Oracle timestamp queries must use literals in java.sql.Date format
if ("Oracle".equals(databaseType)) {
Date rawColOracleTimestampValue = resultSet.getDate(columnIndex);
java.sql.Date oracleTimestampValue = new java.sql.Date(rawColOracleTimestampValue.getTime());
java.sql.Date maxOracleTimestampValue = null;
if (maxValueString != null) {
maxOracleTimestampValue = java.sql.Date.valueOf(maxValueString);
}
if (maxOracleTimestampValue == null || oracleTimestampValue.after(maxOracleTimestampValue)) {
return oracleTimestampValue.toString();
}
} else {
Timestamp colTimestampValue = resultSet.getTimestamp(columnIndex);
java.sql.Timestamp maxTimestampValue = null;
if (maxValueString != null) {
// For backwards compatibility, the type might be TIMESTAMP but the state value is in DATE format. This should be a one-time occurrence as the next maximum value
// should be stored as a full timestamp. Even so, check to see if the value is missing time-of-day information, and use the "date" coercion rather than the
// "timestamp" coercion in that case
try {
maxTimestampValue = java.sql.Timestamp.valueOf(maxValueString);
} catch (IllegalArgumentException iae) {
maxTimestampValue = new java.sql.Timestamp(java.sql.Date.valueOf(maxValueString).getTime());
}
}
if (maxTimestampValue == null || colTimestampValue.after(maxTimestampValue)) {
return colTimestampValue.toString();
}
}
break;
case BIT:
@ -411,9 +405,15 @@ public abstract class AbstractDatabaseFetchProcessor extends AbstractSessionFact
case TIME:
return "'" + value + "'";
case TIMESTAMP:
// Timestamp literals in Oracle need to be cast with TO_DATE
if ("Oracle".equals(databaseType)) {
return "to_date('" + value + "', 'yyyy-mm-dd HH24:MI:SS')";
// For backwards compatibility, the type might be TIMESTAMP but the state value is in DATE format. This should be a one-time occurrence as the next maximum value
// should be stored as a full timestamp. Even so, check to see if the value is missing time-of-day information, and use the "date" coercion rather than the
// "timestamp" coercion in that case
if (value.matches("\\d{4}-\\d{2}-\\d{2}")) {
return "date '" + value + "'";
} else {
return "timestamp '" + value + "'";
}
} else {
return "'" + value + "'";
}

2
nifi-nar-bundles/nifi-standard-bundle/nifi-standard-processors/src/test/java/org/apache/nifi/processors/standard/QueryDatabaseTableTest.java
View File

@ -157,7 +157,7 @@ public class QueryDatabaseTableTest {
// Test Oracle strategy
dbAdapter = new OracleDatabaseAdapter();
query = processor.getQuery(dbAdapter, "myTable", null, Arrays.asList("id", "DATE_CREATED"), stateManager.getState(Scope.CLUSTER).toMap());
assertEquals("SELECT * FROM myTable WHERE id > 509 AND DATE_CREATED >= to_date('2016-03-07 12:34:56', 'yyyy-mm-dd HH24:MI:SS')", query);
assertEquals("SELECT * FROM myTable WHERE id > 509 AND DATE_CREATED >= timestamp '2016-03-07 12:34:56'", query);
}
@Test(expected = IllegalArgumentException.class)