/** Returns document counts for each partition. */
Map<Object, Integer> getDocumentCountByPartition(List<Document> documents) {
return ImmutableMap.copyOf(
Maps.transformValues(
getDocumentsByPartition(documents).asMap(),
new Function<Collection<Document>, Integer>() {
public Integer apply(Collection<Document> documents) {
return documents.size();
}
}));
}
public OptiqSchema(OptiqSchema parent, final Schema schema, String name) {
this.parent = parent;
this.schema = schema;
this.name = name;
assert (parent == null) == (this instanceof OptiqRootSchema);
//noinspection unchecked
this.compositeTableMap =
CompositeMap.of(
Maps.transformValues(
tableMap,
new com.google.common.base.Function<TableEntry, Table>() {
public Table apply(TableEntry input) {
return input.getTable();
}
}),
Maps.transformValues(
Multimaps.filterEntries(
functionMap,
new Predicate<Map.Entry<String, FunctionEntry>>() {
public boolean apply(Map.Entry<String, FunctionEntry> entry) {
final Function function = entry.getValue().getFunction();
return function instanceof TableMacro
&& function.getParameters().isEmpty();
}
})
.asMap(),
new com.google.common.base.Function<Collection<FunctionEntry>, Table>() {
public Table apply(Collection<FunctionEntry> input) {
// At most one function with zero parameters.
final TableMacro tableMacro =
(TableMacro) input.iterator().next().getFunction();
return tableMacro.apply(ImmutableList.of());
}
}),
Compatible.INSTANCE.asMap(
schema.getTableNames(),
new com.google.common.base.Function<String, Table>() {
public Table apply(String input) {
return schema.getTable(input);
}
}));
// TODO: include schema's functions in this map.
this.compositeFunctionMap =
Multimaps.transformValues(
functionMap,
new com.google.common.base.Function<FunctionEntry, Function>() {
public Function apply(FunctionEntry input) {
return input.getFunction();
}
});
//noinspection unchecked
this.compositeSubSchemaMap =
CompositeMap.of(
subSchemaMap,
Compatible.INSTANCE.asMap(
schema.getSubSchemaNames(),
new com.google.common.base.Function<String, OptiqSchema>() {
public OptiqSchema apply(String name) {
return add(name, schema.getSubSchema(name));
}
}));
}