zhangjun0x01 commented on a change in pull request #2229:
URL: https://github.com/apache/iceberg/pull/2229#discussion_r572630207
##########
File path: flink/src/main/java/org/apache/iceberg/flink/IcebergTableSource.java
##########
@@ -100,70 +96,67 @@ public boolean isBounded() {
.build();
}
- @Override
- public TableSchema getTableSchema() {
- return schema;
- }
-
- @Override
- public DataType getProducedDataType() {
- return getProjectedSchema().toRowDataType().bridgedTo(RowData.class);
- }
-
private TableSchema getProjectedSchema() {
- TableSchema fullSchema = getTableSchema();
if (projectedFields == null) {
- return fullSchema;
+ return schema;
} else {
- String[] fullNames = fullSchema.getFieldNames();
- DataType[] fullTypes = fullSchema.getFieldDataTypes();
+ String[] fullNames = schema.getFieldNames();
+ DataType[] fullTypes = schema.getFieldDataTypes();
return TableSchema.builder().fields(
Arrays.stream(projectedFields).mapToObj(i ->
fullNames[i]).toArray(String[]::new),
Arrays.stream(projectedFields).mapToObj(i ->
fullTypes[i]).toArray(DataType[]::new)).build();
}
}
@Override
- public String explainSource() {
- String explain = "Iceberg table: " + loader.toString();
- if (projectedFields != null) {
- explain += ", ProjectedFields: " + Arrays.toString(projectedFields);
- }
-
- if (isLimitPushDown) {
- explain += String.format(", LimitPushDown : %d", limit);
- }
+ public void applyLimit(long newLimit) {
+ this.limit = newLimit;
+ }
- if (isFilterPushedDown()) {
- explain += String.format(", FilterPushDown: %s", COMMA.join(filters));
+ @Override
+ public Result applyFilters(List<ResolvedExpression> flinkFilters) {
+ List<org.apache.iceberg.expressions.Expression> expressions =
Lists.newArrayList();
+ for (Expression predicate : flinkFilters) {
+ FlinkFilters.convert(predicate).ifPresent(expressions::add);
}
- return TableConnectorUtils.generateRuntimeName(getClass(),
getTableSchema().getFieldNames()) + explain;
+ this.filters = expressions;
+ return Result.of(flinkFilters, flinkFilters);
}
@Override
- public boolean isLimitPushedDown() {
- return isLimitPushDown;
+ public boolean supportsNestedProjection() {
+ return false;
}
@Override
- public TableSource<RowData> applyLimit(long newLimit) {
- return new IcebergTableSource(loader, schema, properties, projectedFields,
true, newLimit, filters, readableConfig);
+ public ChangelogMode getChangelogMode() {
Review comment:
now ,flink read only support `INSERT-only`, if we add other mode , it
will throw an exception ,like this:
`
Querying a table in batch mode is currently only possible for INSERT-only
table sources. But the source for table 'iceberg_catalog.default.t' produces
other changelog messages than just INSERT.
`
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