1 package org.opendaylight.ovsdb.lib.meta;
3 import com.fasterxml.jackson.databind.JsonNode;
4 import org.opendaylight.ovsdb.Insert;
5 import org.slf4j.Logger;
6 import org.slf4j.LoggerFactory;
8 import java.lang.reflect.Constructor;
9 import java.util.HashMap;
10 import java.util.Iterator;
14 * @author araveendrann
16 public class TableSchema<E extends TableSchema<E>> {
17 protected static final Logger logger = LoggerFactory.getLogger(TableSchema.class);
19 private Map<String, ColumnSchema> columns;
21 public TableSchema() {
24 public TableSchema(String name, Map<String, ColumnSchema> columns) {
26 this.columns = columns;
29 public static TableSchema fromJson(String tableName, JsonNode json) {
31 if (!json.isObject() || !json.has("columns")) {
32 //todo specific types of exception
33 throw new RuntimeException("bad tableschema root, expected \"columns\" as child");
36 Map<String, ColumnSchema> columns = new HashMap<>();
37 for (Iterator<Map.Entry<String, JsonNode>> iter = json.get("columns").fields(); iter.hasNext(); ) {
38 Map.Entry<String, JsonNode> column = iter.next();
39 logger.debug("%s:%s", tableName, column.getKey());
40 columns.put(column.getKey(), ColumnSchema.fromJson(column.getKey(), column.getValue()));
43 TableSchema tableSchema = new TableSchema(tableName, columns);
47 public <E extends TableSchema<E>> E as(Class<E> clazz) {
49 Constructor<E> e = clazz.getConstructor(TableSchema.class);
50 return e.newInstance(this);
51 } catch (Exception e) {
52 throw new RuntimeException("exception constructing instance of clazz " + clazz, e);
56 public Insert<E> insert() {
57 return new Insert<>(this);
62 public <D> ColumnSchema<E, D> column(String column) {
63 //todo exception handling
64 return columns.get(column);
67 public String getName() {
71 public void setName(String name) {
75 public static class AnyTableSchema extends TableSchema<AnyTableSchema>{}