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feat: Support query hints for DML statements #1030

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merged 3 commits into from Apr 6, 2021
Merged

feat: Support query hints for DML statements #1030

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8875eb1
spanner-jdbc: Support query hints for DML statements
ktchana Mar 31, 2021
bc7e092
format code for query hints for DML statements change
ktchana Mar 31, 2021
03e327a
feat: Support query hints for DML statements
ktchana Apr 1, 2021
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15 changes: 7 additions & 8 deletions google-cloud-spanner/src/main/java/com/google/cloud/spanner/connection/StatementParser.java
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Expand Up @@ -24,6 +24,7 @@
import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Sets;
import com.google.spanner.v1.ExecuteSqlRequest.QueryOptions;
import java.util.Collections;
import java.util.Objects;
Expand Down Expand Up @@ -457,17 +458,15 @@ static String removeStatementHint(String sql) {
// searching for the first occurrence of a keyword that should be preceded by a closing curly
// brace at the end of the statement hint.
int startStatementHintIndex = sql.indexOf('{');
// Statement hints are only allowed for queries.
// Statement hints are allowed for both queries and DML statements.
int startQueryIndex = -1;
String upperCaseSql = sql.toUpperCase();
for (String keyword : selectStatements) {
Set<String> selectAndDmlStatements =
Sets.union(selectStatements, dmlStatements).immutableCopy();
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if style allows, consider moving the declaration and assignment on a single line.

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The line was split by the formatter so I guess this is what is needed to be style-conformant.

for (String keyword : selectAndDmlStatements) {
startQueryIndex = upperCaseSql.indexOf(keyword);
if (startQueryIndex > -1) break;
}
if (startQueryIndex <= -1) {
for (String keyword : dmlStatements) {
startQueryIndex = upperCaseSql.indexOf(keyword);
if (startQueryIndex > -1) break;
if (startQueryIndex > -1) {
break;
}
}
if (startQueryIndex > -1) {
Expand Down