Examples with ViewSystemMetadataWriter co.cask.cdap.data2.metadata.system.ViewSystemMetadataWriter used on opensource projects

Example 1 with ViewSystemMetadataWriter

use of co.cask.cdap.data2.metadata.system.ViewSystemMetadataWriter in project cdap by caskdata.

the class ExistingEntitySystemMetadataWriter method writeSystemMetadataForStreams.

private void writeSystemMetadataForStreams(NamespaceId namespace) throws Exception {
    for (StreamSpecification streamSpec : store.getAllStreams(namespace)) {
        StreamId streamId = namespace.stream(streamSpec.getName());
        SystemMetadataWriter writer = new StreamSystemMetadataWriter(metadataStore, streamId, streamAdmin.getConfig(streamId), streamSpec.getDescription());
        writer.write();
        for (StreamViewId view : streamAdmin.listViews(streamId)) {
            writer = new ViewSystemMetadataWriter(metadataStore, view, viewAdmin.get(view), true);
            writer.write();
        }
    }
}

Example 2 with ViewSystemMetadataWriter

use of co.cask.cdap.data2.metadata.system.ViewSystemMetadataWriter in project cdap by caskdata.

the class ViewAdmin method createOrUpdate.

public boolean createOrUpdate(StreamViewId viewId, ViewSpecification spec) throws Exception {
    try {
        ViewSpecification previousSpec = store.get(viewId);
        if (spec.getTableName() == null) {
            // use the previous table name
            spec = new ViewSpecification(spec.getFormat(), previousSpec.getTableName());
        } else if (!spec.getTableName().equals(previousSpec.getTableName())) {
            throw new IllegalArgumentException(String.format("Cannot change table name for view %s", viewId));
        }
        explore.disableExploreStream(viewId.getParent(), previousSpec.getTableName());
    } catch (NotFoundException e) {
    // pass through
    }
    if (spec.getTableName() == null) {
        spec = new ViewSpecification(spec.getFormat(), naming.getTableName(viewId));
    }
    explore.enableExploreStream(viewId.getParent(), spec.getTableName(), spec.getFormat());
    boolean result = store.createOrUpdate(viewId, spec);
    ViewSystemMetadataWriter systemMetadataWriter = new ViewSystemMetadataWriter(metadataStore, viewId, spec, !result);
    systemMetadataWriter.write();
    return result;
}

Example 3 with ViewSystemMetadataWriter

use of co.cask.cdap.data2.metadata.system.ViewSystemMetadataWriter in project cdap by caskdata.

the class ViewSystemMetadataWriterTest method getViewMetadataSchema.

private String getViewMetadataSchema(String format, @Nullable Schema schema) {
    StreamViewId viewId = NamespaceId.DEFAULT.stream("mystream").view("myview");
    FormatSpecification formatSpec = new FormatSpecification(format, schema);
    ViewSpecification viewSpec = new ViewSpecification(formatSpec);
    NoOpMetadataStore metadataStore = new NoOpMetadataStore();
    ViewSystemMetadataWriter writer = new ViewSystemMetadataWriter(metadataStore, viewId, viewSpec, false);
    return writer.getSchemaToAdd();
}