cascading.avro | Cascading Scheme for the Apache Avro data serialization | Serialization library
kandi X-RAY | cascading.avro Summary
kandi X-RAY | cascading.avro Summary
cascading.avro is a Cascading Scheme for the Apache Avro serialization format, which has been publicly released by Bixo Labs under the Apache license. This means you can use Avro as the source of tuples for a Cascading flow, and as a sink for saving results. This is particularly useful when you need to exchange data with other programming languages, as Avro is both efficient and cross-language. Information about Avro is available from and also When you create an AvroSchema, you specify the fields and types (classes) of each field. This lets the schema auto-generate a corresponding Avro scheme, for both reading and writing data.
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Top functions reviewed by kandi - BETA
- Initialize the sink
- Generate an Avro schema
- Converts a Java class to an Avro schema type
- Creates an avro schema
- Sends a tuple to the sink
- Converts an object to an avro array
- Convert an object to avro map
- Convert to avro primitive
- Adds an enum to a tuple
- Adds bytes to a tuple
- Add a list to a tuple
- Add all of the values to a tuple
- Returns the values of the specified key as a tuple
- This method converts an object to a String
- Convert an object to a Tuple
- Convert from avro primitive to String
- Validates the fields
- Get the size of the scheme array
- Returns true if the given array type is a primitive array type
- Creates the type map
- Initialize the source tap schema for source tap
- Gets the Avro schema
cascading.avro Key Features
cascading.avro Examples and Code Snippets
Community Discussions
Trending Discussions on Serialization
QUESTION
I am trying to find a simple and efficient way to (de)serialize enums in Scala 3 using circe
.
Consider the following example:
...ANSWER
Answered 2022-Jan-23 at 21:34In Scala 3 you can use Mirrors to do the derivation directly:
QUESTION
Java's ArrayList
uses custom serialization and explicitly writes the size
. Nevertheless, size is not marked in ArrayList
as transient
. Why is size written two times: once via defaultWriteObject
and again vis writeInt(size)
as shown below (writeObject
method)?
ANSWER
Answered 2022-Mar-14 at 21:59It exists solely for compatibility with old java versions.
detailsIf you take a look at the comment above s.writeInt(size)
, you can see that this is supposed to be the capacity. In previous java versions, the serialized form of ArrayList
had a size and a capacity.
Both of them represent actual properties of an ArrayList
. The size
represents the number of items in the ArrayList
while the capacity
refers to the number of of possible items (length of the array) in it without the array needing to be recreated.
If you take a look at readObject
, you can see that the capacity is ignored:
QUESTION
I have a problem with Object-Oriented Project Hangman - serialization part. I saved my code in serialize method, but when I try to unserialize it, I have a problem with it. I see all components of classes in the YAML file and when I try to reach them with code, I can't do it. I don't know where the problem is. Here is my serialize method and deserialize method.
...ANSWER
Answered 2022-Feb-20 at 14:15I think it's actually working fine.
YAML.load
returns an different instance of Game. You can call methods on that instance, but you don't have any access to the properties.
QUESTION
I've attached the boost sample serialization code below. I see that they create an output archive and then write the class to the output archive. Then later, they create an input archive and read from the input archive into a new class instance. My question is, how does the input archive know which output archive its reading data from? For example, say I have multiple output archives. How does the input archive that is created know which output archive to read from? I'm not understanding how this is working. Thanks for your help!
...ANSWER
Answered 2022-Feb-13 at 16:00Like others said, you can set up a stream from existing content. That can be from memory (say istringstream
) or from a file (say ifstream
).
All that matters is what content you stream from. Here's you first example modified to save 10 different streams, which can be read back in any order, or not at all:
QUESTION
I have one call that return different objects name, in this case, each name is the hash of your wallet address, but I would like to treat them indifferently because all that matters is the data that is inside them, using a standard converter like Gson I am not able to do this, is there any way to do it manually?
...ANSWER
Answered 2022-Jan-25 at 12:34As I understand your question, this is less to do with retrofit and more with JSON parsing. Because the payload structure is a bit awkward I suggest you consume it in two steps:
- step 1. Consume the
content
success
,cache_last_updated
andtotal
- step 2. Add the
id
QUESTION
I have the following code which exports an object to an XML file, then reads it back in and prints it on the Information stream.
...ANSWER
Answered 2021-Dec-30 at 22:40The CliXml serializer is exposed via the [PSSerializer]
class:
QUESTION
Is there a way to generate a nested JavaScript Object
from entries?
Object.fromEntries()
doesn't quite do it since it doesn't do nested objects.
ANSWER
Answered 2021-Dec-03 at 17:50I think I found a way using lodash
:
QUESTION
I have an enum that I'd like to deserialize from JSON using kotlinx.serialization while ignoring unknown values. This is the enum
...ANSWER
Answered 2021-Sep-24 at 12:41For now I think that the only way would be to use coerceInputValues
option with default value of enum field to be null like in this example:
QUESTION
I am using SharpSerializer to serialize/deserialize object.
I want the ability to ignore specific properties when deserializing.
SharpSerializer has an option to ignore properties by attribute or by classes and property name:
...ANSWER
Answered 2021-Nov-10 at 17:43You are correct that SharpSerializer does not implement ignoring of property values when deserializing. This can be verified from the reference source for ObjectFactory.fillProperties(object obj, IEnumerable properties)
:
QUESTION
I have a manytomany relation mapped with a custom table to add an extra column. I can deserialize it, but deserialized it shows the elements of the join table, I would to just the joined element. So what I currently get is the following:
...ANSWER
Answered 2021-Aug-18 at 01:35It seems like you would like an array of numbers being returned to the client.
You could create a getter that returns the array of ids and turn the other relationship as not serializable via annotations.
The fact that you only need one of the ids might be an indication of non ideal mapping in the database.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install cascading.avro
You can use cascading.avro like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the cascading.avro component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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