org.omg.IOP.CodecFactoryPackage

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1. Creating a CodecFactory:

import org.omg.IOP.CodecFactory;
import org.omg.IOP.CodecFactoryPackage;
import org.omg.IOP.Encoding;
import org.omg.IOP.Codec;

public class CodecFactoryExample {

    public static void main(String[] args) {
        // Get the default CodecFactory
        CodecFactory factory = CodecFactoryPackage.getFactory();

        // Create a Codec for a specific encoding
        Encoding encoding = Encoding.Encodings.CDR_ENC_1_0;
        Codec codec = factory.createCodec(encoding);
    }
}

2. Writing to a CDR Stream using a Codec:

import org.omg.IOP.Codec;
import org.omg.IOP.Encoding;
import org.omg.IOP.CodecFactoryPackage;

import java.io.ByteArrayOutputStream;
import java.io.IOException;

public class CodecWriteExample {

    public static void main(String[] args) throws IOException {
        // Get the default CodecFactory
        CodecFactory factory = CodecFactoryPackage.getFactory();

        // Create a Codec for a specific encoding
        Encoding encoding = Encoding.Encodings.CDR_ENC_1_0;
        Codec codec = factory.createCodec(encoding);

        // Create a CDR stream
        ByteArrayOutputStream out = new ByteArrayOutputStream();

        // Write a string to the CDR stream using the Codec
        String value = "Hello, world!";
        codec.write_string(value, out);
    }
}

3. Reading from a CDR Stream using a Codec:

import org.omg.IOP.Codec;
import org.omg.IOP.Encoding;
import org.omg.IOP.CodecFactoryPackage;

import java.io.ByteArrayInputStream;
import java.io.IOException;

public class CodecReadExample {

    public static void main(String[] args) throws IOException {
        // Get the default CodecFactory
        CodecFactory factory = CodecFactoryPackage.getFactory();

        // Create a Codec for a specific encoding
        Encoding encoding = Encoding.Encodings.CDR_ENC_1_0;
        Codec codec = factory.createCodec(encoding);

        // Create a CDR stream
        byte[] data = "Hello, world!".getBytes();
        ByteArrayInputStream in = new ByteArrayInputStream(data);

        // Read a string from the CDR stream using the Codec
        String value = codec.read_string(in);
    }
}

4. Encoding and Decoding Objects:

import org.omg.IOP.Codec;
import org.omg.IOP.Encoding;
import org.omg.IOP.CodecFactoryPackage;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;

public class CodecEncodeDecodeExample {

    public static void main(String[] args) throws IOException, ClassNotFoundException {
        // Get the default CodecFactory
        CodecFactory factory = CodecFactoryPackage.getFactory();

        // Create a Codec for a specific encoding
        Encoding encoding = Encoding.Encodings.CDR_ENC_1_0;
        Codec codec = factory.createCodec(encoding);

        // Create an object to encode
        Employee employee = new Employee("John Smith", 12345);

        // Encode the object to a CDR stream
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        codec.encode_value(employee, out);

        // Decode the object from the CDR stream
        ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
        Employee decodedEmployee = (Employee) codec.decode_value(in);
    }
}

5. Customizing CodecFactory with a Custom Codec:

import org.omg.IOP.Codec;
import org.omg.IOP.CodecFactory;
import org.omg.IOP.CodecPackage.UnknownEncoding;
import org.omg.IOP.Encoding;
import org.omg.IOP.CodecFactoryPackage;

public class CustomCodecFactoryExample {

    public static void main(String[] args) {
        // Create a custom Codec
        Codec customCodec = new CustomCodec();

        // Create a CodecFactory that uses the custom Codec
        CodecFactory factory = new CodecFactory() {

            @Override
            public Codec createCodec(Encoding encoding) throws UnknownEncoding {
                if (encoding.value() == 12345) {
                    return customCodec;
                } else {
                    throw new UnknownEncoding(encoding.value());
                }
            }
        };

        // Set the custom CodecFactory as the default
        CodecFactoryPackage.setFactory(factory);

        // Create a Codec for the custom encoding
        Codec codec = factory.createCodec(Encoding.Encodings.from_int(12345));
    }
}

6. Implementing a Custom Codec:

import org.omg.IOP.Codec;
import org.omg.IOP.Encoding;
import org.omg.IOP.IOR;
import org.omg.IOP.CodecPackage.FormatMismatch;
import org.omg.IOP.CodecPackage.InvalidTypeForEncoding;
import org.omg.CORBA.TypeCode;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

public class CustomCodec implements Codec {

    @Override
    public OutputStream encodeValue(OutputStream out, Object value, TypeCode type)
        throws FormatMismatch, InvalidTypeForEncoding, IOException {
        // Encode the value using a custom format
        return out;
    }

    @Override
    public InputStream decodeValue(InputStream in, TypeCode type)
        throws FormatMismatch, InvalidTypeForEncoding, IOException {
        // Decode the value using a custom format
        return in;
    }

    @Override
    public void encode(OutputStream out, IOR ior) throws IOException {
        // Encode the IOR using a custom format
    }

    @Override
    public IOR decode(InputStream in) throws IOException {
        // Decode the IOR using a custom format
        return null;
    }

    @Override
    public Encoding getEncoding() {
        // Return the custom encoding
        return Encoding.Encodings.from_int(12345);
    }
}

7. Using CodecFactory to Encode and Decode Objects with Custom TypeCodes:

import org.omg.IOP.Codec;
import org.omg.IOP.CodecFactory;
import org.omg.IOP.CodecFactoryPackage;
import org.omg.IOP.Encoding;
import org.omg.IOP.TypeCodeFactory;
import org.omg.IOP.TypeCodePackage.BadKind;
import org.omg.IOP.TypeCodePackage.InvalidTypeCode;
import org.omg.CORBA.TypeCode;

public class CodecFactoryCustomTypeCodeExample {

    public static void main(String[] args) throws BadKind, InvalidTypeCode {
        // Create a TypeCodeFactory to create a custom TypeCode
        TypeCodeFactory typeCodeFactory = TypeCodeFactory.Init.create_factory();

        // Create a custom TypeCode
        TypeCode customTypeCode = typeCodeFactory.create_alias("MyCustomType", "org.example.MyCustomType", 0);

        // Create a CodecFactory that uses the custom TypeCodeFactory
        CodecFactory factory = new CodecFactory() {

            @Override
            public Codec createCodec(Encoding encoding) {
                return new Codec() {

                    @Override
                    public OutputStream encodeValue(OutputStream out, Object value, TypeCode type)
                        throws FormatMismatch, InvalidTypeForEncoding, IOException {
                        // Encode the value using the custom TypeCode
                        return out;
                    }

                    @Override
                    public InputStream decodeValue(InputStream in, TypeCode type)
                        throws FormatMismatch, InvalidTypeForEncoding, IOException {
                        // Decode the value using the custom TypeCode
                        return in;
                    }

                    @Override
                    public void encode(OutputStream out, org.omg.IOP.IOR ior) throws IOException {
                        // Encode the IOR using the custom TypeCode
                    }

                    @Override
                    public org.omg.IOP.IOR decode(InputStream in) throws IOException {
                        // Decode the IOR using the custom TypeCode
                        return null;
                    }

                    @Override
                    public Encoding getEncoding() {
                        // Return the custom encoding
                        return Encoding.Encodings.CDR_ENC_1_0;
                    }
                };
            }
        };

        // Set the custom CodecFactory as the default
        CodecFactoryPackage.setFactory(factory);

        // Create a Codec for the custom encoding
        Codec codec = factory.createCodec(Encoding.Encodings.CDR_ENC_1_0);

        // Create an object to encode with the custom TypeCode
        MyCustomType value = new MyCustomType();

        // Encode and decode the object using the Codec
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        codec.encode_value(value, out, customTypeCode);

        ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
        MyCustomType decodedValue = (MyCustomType) codec.decode_value(in, customTypeCode);
    }
}

8. Encoding and Decoding Multiple Values in a Single CDR Stream:

import org.omg.IOP.Codec;
import org.omg.IOP.CodecFactory;
import org.omg.IOP.CodecFactoryPackage;
import org.omg.IOP.Encoding;
import org.omg.CORBA.TypeCode;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;

public class CodecMultipleValuesExample {

    public static void main(String[] args) throws IOException {
        // Get the default CodecFactory
        CodecFactory factory = CodecFactoryPackage.getFactory();

        // Create a Codec for a specific encoding
        Encoding encoding = Encoding.Encodings.CDR_ENC_1_0;
        Codec codec = factory.createCodec(encoding);

        // Create a CDR stream
        ByteArrayOutputStream out = new ByteArrayOutputStream();

        // Create and Encode Multiple Values
        String stringValue = "Hello, world!";
        int intValue = 12345;

        // Write the TypeCodes to the CDR stream
        TypeCode stringTypeCode = codec.get_type_code(string