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123c637e
编写于
7月 21, 2016
作者:
J
Jark Wu
提交者:
twalthr
8月 02, 2016
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电子邮件补丁
差异文件
[FLINK-4180] [FLINK-4181] [table] add Batch SQL and Stream SQL and Stream Table API examples
This closes #2274.
上级
45df1b25
变更
4
隐藏空白更改
内联
并排
Showing
4 changed file
with
235 addition
and
0 deletion
+235
-0
flink-libraries/flink-table/src/main/java/org/apache/flink/examples/java/JavaSQLExample.java
...n/java/org/apache/flink/examples/java/JavaSQLExample.java
+72
-0
flink-libraries/flink-table/src/main/scala/org/apache/flink/examples/scala/StreamSQLExample.scala
...la/org/apache/flink/examples/scala/StreamSQLExample.scala
+62
-0
flink-libraries/flink-table/src/main/scala/org/apache/flink/examples/scala/StreamTableExample.scala
.../org/apache/flink/examples/scala/StreamTableExample.scala
+58
-0
flink-libraries/flink-table/src/main/scala/org/apache/flink/examples/scala/WordCountSQL.scala
.../scala/org/apache/flink/examples/scala/WordCountSQL.scala
+43
-0
未找到文件。
flink-libraries/flink-table/src/main/java/org/apache/flink/examples/java/JavaSQLExample.java
0 → 100644
浏览文件 @
123c637e
/*
* 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.flink.examples.java
;
import
org.apache.flink.api.table.Table
;
import
org.apache.flink.api.java.DataSet
;
import
org.apache.flink.api.java.ExecutionEnvironment
;
import
org.apache.flink.api.java.table.BatchTableEnvironment
;
import
org.apache.flink.api.table.TableEnvironment
;
/**
* Simple example that shows how the Batch SQL used in Java.
*/
public
class
JavaSQLExample
{
public
static
class
WC
{
public
String
word
;
public
long
frequency
;
// Public constructor to make it a Flink POJO
public
WC
()
{
}
public
WC
(
String
word
,
long
frequency
)
{
this
.
word
=
word
;
this
.
frequency
=
frequency
;
}
@Override
public
String
toString
()
{
return
"WC "
+
word
+
" "
+
frequency
;
}
}
public
static
void
main
(
String
[]
args
)
throws
Exception
{
// set up execution environment
ExecutionEnvironment
env
=
ExecutionEnvironment
.
getExecutionEnvironment
();
BatchTableEnvironment
tableEnv
=
TableEnvironment
.
getTableEnvironment
(
env
);
DataSet
<
WC
>
input
=
env
.
fromElements
(
new
WC
(
"Hello"
,
1
),
new
WC
(
"Ciao"
,
1
),
new
WC
(
"Hello"
,
1
));
// register the DataSet as table "WordCount"
tableEnv
.
registerDataSet
(
"WordCount"
,
input
,
"word, frequency"
);
// run a SQL query on the Table and retrieve the result as a new Table
Table
table
=
tableEnv
.
sql
(
"SELECT word, SUM(frequency) as frequency FROM WordCount GROUP BY word"
);
DataSet
<
WC
>
result
=
tableEnv
.
toDataSet
(
table
,
WC
.
class
);
result
.
print
();
}
}
flink-libraries/flink-table/src/main/scala/org/apache/flink/examples/scala/StreamSQLExample.scala
0 → 100644
浏览文件 @
123c637e
/*
* 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.flink.examples.scala
import
org.apache.flink.api.scala._
import
org.apache.flink.api.scala.table._
import
org.apache.flink.api.table.TableEnvironment
import
org.apache.flink.streaming.api.scala.
{
DataStream
,
StreamExecutionEnvironment
}
/**
* Simple example for demonstrating the use of SQL on Stream Table.
*/
object
StreamSQLExample
{
case
class
Order
(
user
:
Long
,
product
:
String
,
amount
:
Int
)
def
main
(
args
:
Array
[
String
])
:
Unit
=
{
// set up execution environment
val
env
=
StreamExecutionEnvironment
.
getExecutionEnvironment
val
tEnv
=
TableEnvironment
.
getTableEnvironment
(
env
)
val
orderA
:
DataStream
[
Order
]
=
env
.
fromCollection
(
Seq
(
Order
(
1L
,
"beer"
,
3
),
Order
(
1L
,
"diaper"
,
4
),
Order
(
3L
,
"rubber"
,
2
)))
val
orderB
:
DataStream
[
Order
]
=
env
.
fromCollection
(
Seq
(
Order
(
2L
,
"pen"
,
3
),
Order
(
2L
,
"rubber"
,
3
),
Order
(
4L
,
"beer"
,
1
)))
// register the DataStream under the name "OrderA" and "OrderB"
tEnv
.
registerDataStream
(
"OrderA"
,
orderA
,
'user
,
'product
,
'amount
)
tEnv
.
registerDataStream
(
"OrderB"
,
orderB
,
'user
,
'product
,
'amount
)
// Union two tables
val
result
=
tEnv
.
sql
(
"SELECT STREAM * FROM OrderA WHERE amount > 2 UNION ALL "
+
"SELECT STREAM * FROM OrderB WHERE amount < 2"
)
result
.
toDataStream
[
Order
].
print
()
env
.
execute
()
}
}
flink-libraries/flink-table/src/main/scala/org/apache/flink/examples/scala/StreamTableExample.scala
0 → 100644
浏览文件 @
123c637e
/*
* 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.flink.examples.scala
import
org.apache.flink.api.scala._
import
org.apache.flink.api.scala.table._
import
org.apache.flink.api.table.TableEnvironment
import
org.apache.flink.streaming.api.scala.
{
DataStream
,
StreamExecutionEnvironment
}
/**
* Simple example for demonstrating the use of Table API on Stream Table.
*/
object
StreamTableExample
{
case
class
Order
(
user
:
Long
,
product
:
String
,
amount
:
Int
)
def
main
(
args
:
Array
[
String
])
:
Unit
=
{
// set up execution environment
val
env
=
StreamExecutionEnvironment
.
getExecutionEnvironment
val
tEnv
=
TableEnvironment
.
getTableEnvironment
(
env
)
val
orderA
=
env
.
fromCollection
(
Seq
(
Order
(
1L
,
"beer"
,
3
),
Order
(
1L
,
"diaper"
,
4
),
Order
(
3L
,
"rubber"
,
2
))).
toTable
(
tEnv
)
val
orderB
=
env
.
fromCollection
(
Seq
(
Order
(
2L
,
"pen"
,
3
),
Order
(
2L
,
"rubber"
,
3
),
Order
(
4L
,
"beer"
,
1
))).
toTable
(
tEnv
)
val
result
:
DataStream
[
Order
]
=
orderA
.
unionAll
(
orderB
)
.
select
(
'user
,
'product
,
'amount
)
.
where
(
'amount
>
2
)
.
toDataStream
[
Order
]
result
.
print
()
env
.
execute
()
}
}
flink-libraries/flink-table/src/main/scala/org/apache/flink/examples/scala/WordCountSQL.scala
0 → 100644
浏览文件 @
123c637e
/*
* 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.flink.examples.scala
import
org.apache.flink.api.scala._
import
org.apache.flink.api.scala.table._
import
org.apache.flink.api.table.TableEnvironment
/**
* Simple example that shows how the Batch SQL used in Scala.
*/
object
WordCountSQL
{
case
class
WC
(
word
:
String
,
count
:
Int
)
def
main
(
args
:
Array
[
String
])
:
Unit
=
{
// set up execution environment
val
env
=
ExecutionEnvironment
.
getExecutionEnvironment
val
tEnv
=
TableEnvironment
.
getTableEnvironment
(
env
)
val
input
=
env
.
fromElements
(
WC
(
"hello"
,
1
),
WC
(
"hello"
,
1
),
WC
(
"ciao"
,
1
))
tEnv
.
registerDataSet
(
"WordCount"
,
input
,
'word
,
'frequency
)
val
table
=
tEnv
.
sql
(
"SELECT word, SUM(frequency) FROM WordCount GROUP BY word"
)
table
.
toDataSet
[
WC
].
print
()
}
}
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