Scala - iterate through specific type
0
I am working with Scala and Avro and in one moment - variable type is:
import scala.reflect.runtime.universe._
def getType[T: TypeTag](value: T) = typeOf[T]
println(getType(schema))
// Output:
org.apache.avro.Schema
and values in it:
println("schema:" + schema)
schema:["null","string"]
How to iterate trough it? (and check if at least one field is defined as 'null' -> in this case first one is null).
Tried:
for(k <- schema) {
println("k: " + k)
}
// value foreach is not a member of org.apache.avro.Schema
scala avro
edited Nov 12 '18 at 5:38
Cœur
17.4k9103144
asked May 14 '18 at 1:07
user9750148
256
add a comment |
0
I am working with Scala and Avro and in one moment - variable type is:
import scala.reflect.runtime.universe._
def getType[T: TypeTag](value: T) = typeOf[T]
println(getType(schema))
// Output:
org.apache.avro.Schema
and values in it:
println("schema:" + schema)
schema:["null","string"]
How to iterate trough it? (and check if at least one field is defined as 'null' -> in this case first one is null).
Tried:
for(k <- schema) {
println("k: " + k)
}
// value foreach is not a member of org.apache.avro.Schema
scala avro
edited Nov 12 '18 at 5:38
Cœur
17.4k9103144
asked May 14 '18 at 1:07
user9750148
256
have you tried some searching ? Perhaps this links will help you : avro.apache.org/docs/1.5.4/api/java/org/apache/avro/Schema.html
– volia17
May 14 '18 at 9:24
@volia Thanks.. I can see API docs but still need a help of example (how to use some of the methods to iterate..). I am still new-ish to Scala / Spark / Avro, that's why asking here.. Do you mind sharing implementation example of it? (then I can test and approve your full answer). Thanks again..
– user9750148
May 14 '18 at 13:56
add a comment |
0
0
0
I am working with Scala and Avro and in one moment - variable type is:
import scala.reflect.runtime.universe._
def getType[T: TypeTag](value: T) = typeOf[T]
println(getType(schema))
// Output:
org.apache.avro.Schema
and values in it:
println("schema:" + schema)
schema:["null","string"]
How to iterate trough it? (and check if at least one field is defined as 'null' -> in this case first one is null).
Tried:
for(k <- schema) {
println("k: " + k)
}
// value foreach is not a member of org.apache.avro.Schema
scala avro
edited Nov 12 '18 at 5:38
Cœur
17.4k9103144
asked May 14 '18 at 1:07
user9750148
256
I am working with Scala and Avro and in one moment - variable type is:
import scala.reflect.runtime.universe._
def getType[T: TypeTag](value: T) = typeOf[T]
println(getType(schema))
// Output:
org.apache.avro.Schema
and values in it:
println("schema:" + schema)
schema:["null","string"]
How to iterate trough it? (and check if at least one field is defined as 'null' -> in this case first one is null).
Tried:
for(k <- schema) {
println("k: " + k)
}
// value foreach is not a member of org.apache.avro.Schema
scala avro
scala avro
edited Nov 12 '18 at 5:38
Cœur
17.4k9103144
asked May 14 '18 at 1:07
user9750148
256
edited Nov 12 '18 at 5:38
Cœur
17.4k9103144
asked May 14 '18 at 1:07
user9750148
256
edited Nov 12 '18 at 5:38
Cœur
17.4k9103144
edited Nov 12 '18 at 5:38
Cœur
17.4k9103144
edited Nov 12 '18 at 5:38
Cœur
17.4k9103144
17.4k9103144
asked May 14 '18 at 1:07
user9750148
256
asked May 14 '18 at 1:07
user9750148
256
asked May 14 '18 at 1:07
user9750148
256
256
have you tried some searching ? Perhaps this links will help you : avro.apache.org/docs/1.5.4/api/java/org/apache/avro/Schema.html
– volia17
May 14 '18 at 9:24
@volia Thanks.. I can see API docs but still need a help of example (how to use some of the methods to iterate..). I am still new-ish to Scala / Spark / Avro, that's why asking here.. Do you mind sharing implementation example of it? (then I can test and approve your full answer). Thanks again..
– user9750148
May 14 '18 at 13:56
add a comment |
have you tried some searching ? Perhaps this links will help you : avro.apache.org/docs/1.5.4/api/java/org/apache/avro/Schema.html
– volia17
May 14 '18 at 9:24
@volia Thanks.. I can see API docs but still need a help of example (how to use some of the methods to iterate..). I am still new-ish to Scala / Spark / Avro, that's why asking here.. Do you mind sharing implementation example of it? (then I can test and approve your full answer). Thanks again..
– user9750148
May 14 '18 at 13:56
have you tried some searching ? Perhaps this links will help you : avro.apache.org/docs/1.5.4/api/java/org/apache/avro/Schema.html
– volia17
May 14 '18 at 9:24
have you tried some searching ? Perhaps this links will help you : avro.apache.org/docs/1.5.4/api/java/org/apache/avro/Schema.html
– volia17
May 14 '18 at 9:24
@volia Thanks.. I can see API docs but still need a help of example (how to use some of the methods to iterate..). I am still new-ish to Scala / Spark / Avro, that's why asking here.. Do you mind sharing implementation example of it? (then I can test and approve your full answer). Thanks again..
– user9750148
May 14 '18 at 13:56
@volia Thanks.. I can see API docs but still need a help of example (how to use some of the methods to iterate..). I am still new-ish to Scala / Spark / Avro, that's why asking here.. Do you mind sharing implementation example of it? (then I can test and approve your full answer). Thanks again..
– user9750148
May 14 '18 at 13:56
add a comment |
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have you tried some searching ? Perhaps this links will help you : avro.apache.org/docs/1.5.4/api/java/org/apache/avro/Schema.html
– volia17
May 14 '18 at 9:24
@volia Thanks.. I can see API docs but still need a help of example (how to use some of the methods to iterate..). I am still new-ish to Scala / Spark / Avro, that's why asking here.. Do you mind sharing implementation example of it? (then I can test and approve your full answer). Thanks again..
– user9750148
May 14 '18 at 13:56