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[refactor](jni) unified jni framework for jdbc catalog (#26317)

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This commit overhauls the JDBC connector logic within our project, transitioning from the previous mechanism of fetching data through JNI calls for individual ResultSet items to a more efficient and unified approach using the VectorTable data structure.
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zy-kkk
2023-11-13 14:28:15 +08:00
committed by GitHub
parent 5a7c0ec9dc
commit 2f32a721ee
7 changed files with 985 additions and 2514 deletions
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fe/fe-core/src/main/java/org/apache/doris/datasource/jdbc/client/JdbcClickHouseClient.java
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@ -43,11 +43,13 @@ public class JdbcClickHouseClient extends JdbcClient {
String ckType = fieldSchema.getDataTypeName();
if (ckType.startsWith("LowCardinality")) {
fieldSchema.setAllowNull(true);
ckType = ckType.substring(15, ckType.length() - 1);
if (ckType.startsWith("Nullable")) {
ckType = ckType.substring(9, ckType.length() - 1);
}
} else if (ckType.startsWith("Nullable")) {
fieldSchema.setAllowNull(true);
ckType = ckType.substring(9, ckType.length() - 1);
}