rdblue commented on code in PR #8147:
URL: https://github.com/apache/iceberg/pull/8147#discussion_r1276786184
##########
core/src/main/java/org/apache/iceberg/view/ViewMetadata.java:
##########
@@ -121,9 +128,178 @@ default ViewMetadata checkAndNormalize() {
versions().subList(versions().size() - versionHistorySizeToKeep,
versions().size());
List<ViewHistoryEntry> history =
history().subList(history().size() - versionHistorySizeToKeep,
history().size());
- return
ImmutableViewMetadata.builder().from(this).versions(versions).history(history).build();
+ return ViewMetadata.buildFrom(this)
+ .discardChanges()
+ .versions(versions)
+ .history(history)
+ .build();
}
return this;
}
+
+ static Builder builder() {
+ return new Builder();
+ }
+
+ static Builder buildFrom(ViewMetadata base) {
+ return new Builder(base);
+ }
+
+ class Builder {
+ private int formatVersion = 1;
+ private String location;
+ private Integer currentSchemaId;
+ private List<Schema> schemas = Lists.newArrayList();
+ private int currentVersionId = 1;
+ private List<ViewVersion> versions = Lists.newArrayList();
+ private List<ViewHistoryEntry> history = Lists.newArrayList();
+ private Map<String, String> properties = Maps.newHashMap();
+ private List<MetadataUpdate> changes = Lists.newArrayList();
+
+ private Builder() {}
+
+ private Builder(ViewMetadata base) {
+ this.formatVersion = base.formatVersion();
+ this.location = base.location();
+ this.currentSchemaId = base.currentSchemaId();
+ this.schemas = Lists.newArrayList(base.schemas());
+ this.currentVersionId = base.currentVersionId();
+ this.versions = Lists.newArrayList(base.versions());
+ this.history = Lists.newArrayList(base.history());
+ this.properties = Maps.newHashMap(base.properties());
+ this.changes = Lists.newArrayList(base.changes());
+ }
+
+ public Builder formatVersion(int newFormatVersion) {
+ this.formatVersion = newFormatVersion;
+ this.changes.add(new
MetadataUpdate.UpgradeFormatVersion(newFormatVersion));
+ return this;
+ }
+
+ public Builder location(String newLocation) {
+ this.location = newLocation;
+ this.changes.add(new MetadataUpdate.SetLocation(newLocation));
+ return this;
+ }
+
+ public Builder currentVersionId(int versionId) {
+ this.currentVersionId = versionId;
+ this.changes.add(new MetadataUpdate.SetCurrentViewVersion(versionId));
+ return this;
+ }
+
+ public Builder currentSchemaId(Integer schemaId) {
+ this.currentSchemaId = schemaId;
+ this.changes.add(new MetadataUpdate.SetCurrentSchema(schemaId));
+ return this;
+ }
+
+ public Builder addSchema(Schema schema) {
+ this.schemas.add(schema);
+ this.changes.add(new MetadataUpdate.AddSchema(schema,
schema.highestFieldId()));
+ return this;
+ }
+
+ public Builder addAllSchemas(Iterable<Schema> schemaEntries) {
+ for (Schema schema : schemaEntries) {
+ this.schemas.add(schema);
+ this.changes.add(new MetadataUpdate.AddSchema(schema,
schema.highestFieldId()));
+ }
+ return this;
+ }
+
+ public Builder schemas(Iterable<Schema> newSchemas) {
+ this.schemas = Lists.newArrayList(newSchemas);
+ for (Schema schema : newSchemas) {
+ this.changes.add(new MetadataUpdate.AddSchema(schema,
schema.highestFieldId()));
+ }
+ return this;
+ }
+
+ public Builder addVersion(ViewVersion version) {
+ this.versions.add(version);
+ this.changes.add(new MetadataUpdate.AddViewVersion(version));
+ return this;
+ }
+
+ public Builder addAllVersions(Iterable<ViewVersion> versionEntries) {
+ for (ViewVersion version : versionEntries) {
+ this.versions.add(version);
+ this.changes.add(new MetadataUpdate.AddViewVersion(version));
+ }
+ return this;
+ }
+
+ public Builder versions(Iterable<ViewVersion> newVersions) {
+ this.versions = Lists.newArrayList(newVersions);
+ for (ViewVersion version : newVersions) {
+ this.changes.add(new MetadataUpdate.AddViewVersion(version));
+ }
+ return this;
+ }
+
+ public Builder addHistory(ViewHistoryEntry historyEntry) {
+ this.history.add(historyEntry);
+ return this;
+ }
+
+ public Builder addAllHistory(Iterable<ViewHistoryEntry> historyEntries) {
+ for (ViewHistoryEntry entry : historyEntries) {
+ this.history.add(entry);
+ }
+ return this;
+ }
+
+ public Builder history(Iterable<ViewHistoryEntry> newHistory) {
+ this.history = Lists.newArrayList(newHistory);
+ return this;
+ }
+
+ public Builder putProperties(String key, String value) {
+ this.properties.put(key, value);
+ this.changes.add(new MetadataUpdate.SetProperties(ImmutableMap.of(key,
value)));
+ return this;
+ }
+
+ public Builder putAllProperties(Map<String, String> newProperties) {
+ this.properties.putAll(newProperties);
+ this.changes.add(new MetadataUpdate.SetProperties(newProperties));
+ return this;
+ }
+
+ public Builder properties(Map<String, String> newProperties) {
+ this.properties = newProperties;
+ this.changes.add(new MetadataUpdate.SetProperties(newProperties));
+ return this;
+ }
+
+ public Builder removeProperties(Set<String> propertiesToRemove) {
+ if (propertiesToRemove.isEmpty()) {
+ return this;
+ }
+
+ propertiesToRemove.forEach(this.properties::remove);
+ this.changes.add(new
MetadataUpdate.RemoveProperties(propertiesToRemove));
+ return this;
+ }
+
+ public Builder discardChanges() {
+ this.changes.clear();
Review Comment:
I think this needs to be called inside the `build` method. Otherwise, the
behavior changes based on when this is called.
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