1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.drill.exec.store.dfs;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.Set;
import com.google.common.collect.ImmutableList;
import net.hydromatic.optiq.Function;
import net.hydromatic.optiq.Schema;
import net.hydromatic.optiq.SchemaPlus;
import net.hydromatic.optiq.Table;
import org.apache.drill.exec.planner.logical.CreateTableEntry;
import org.apache.drill.exec.planner.logical.DrillTable;
import org.apache.drill.exec.rpc.user.DrillUser;
import org.apache.drill.exec.rpc.user.UserSession;
import org.apache.drill.exec.store.AbstractSchema;
import org.apache.drill.exec.store.SchemaFactory;
import org.apache.drill.exec.store.dfs.WorkspaceSchemaFactory.WorkspaceSchema;
import com.google.common.collect.Maps;
import org.apache.drill.exec.store.dfs.shim.DrillFileSystem;
/**
* This is the top level schema that responds to root level path requests. Also supports
*/
public class FileSystemSchemaFactory implements SchemaFactory{
static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(FileSystemSchemaFactory.class);
private List<WorkspaceSchemaFactory> factories;
private String schemaName;
private final String defaultSchemaName = "default";
public FileSystemSchemaFactory(String schemaName, List<WorkspaceSchemaFactory> factories) {
super();
this.schemaName = schemaName;
this.factories = factories;
}
@Override
public void registerSchemas(UserSession session, SchemaPlus parent) {
FileSystemSchema schema = new FileSystemSchema(schemaName, session);
SchemaPlus plusOfThis = parent.add(schema.getName(), schema);
schema.setPlus(plusOfThis);
}
public class FileSystemSchema extends AbstractSchema {
private final WorkspaceSchema defaultSchema;
private final Map<String, WorkspaceSchema> schemaMap = Maps.newHashMap();
public FileSystemSchema(String name, UserSession session) {
super(ImmutableList.<String>of(), name);
for(WorkspaceSchemaFactory f : factories){
WorkspaceSchema s = f.createSchema(getSchemaPath(), session);
schemaMap.put(s.getName(), s);
}
defaultSchema = schemaMap.get(defaultSchemaName);
}
void setPlus(SchemaPlus plusOfThis){
for(WorkspaceSchema s : schemaMap.values()){
plusOfThis.add(s.getName(), s);
}
}
@Override
public boolean showInInformationSchema() {
return false;
}
@Override
public String getTypeName() {
return FileSystemConfig.NAME;
}
@Override
public Table getTable(String name) {
return defaultSchema.getTable(name);
}
@Override
public Collection<Function> getFunctions(String name) {
return defaultSchema.getFunctions(name);
}
@Override
public Set<String> getFunctionNames() {
return defaultSchema.getFunctionNames();
}
@Override
public Schema getSubSchema(String name) {
return schemaMap.get(name);
}
@Override
public Set<String> getSubSchemaNames() {
return schemaMap.keySet();
}
@Override
public Set<String> getTableNames() {
return defaultSchema.getTableNames();
}
@Override
public boolean isMutable() {
return defaultSchema.isMutable();
}
@Override
public CreateTableEntry createNewTable(String tableName) {
return defaultSchema.createNewTable(tableName);
}
@Override
public AbstractSchema getDefaultSchema() {
return defaultSchema;
}
}
}
|
