net.openhft.fix.include.v42.FixMessage Maven / Gradle / Ivy

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/*
 * Copyright 2013 peter.lawrey Lawrey
 *
 * Licensed 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 net.openhft.fix.include.v42;

import net.openhft.fix.include.util.FixConstants;

import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;

/**
 * An object of this class represents FIX protocol message.
 */
public class FixMessage implements FixMessageInterface {
    protected int major = 4;
    protected int minor = 2;
    protected int servicepack = 0;
    protected CharSequence type = "FIX";
    private StringBuilder fixMsgOutput;
    private char delim = '|';
    private char equalsChar = '=';
    private Field[] field;

    /**
     * @param fixMsgBuilder - for static builder implementation.
     */
    public FixMessage(FIXMessageBuilder fixMsgBuilder) {

    }

    /**
     * @return field- Field[] for all data fields in this FIX object
     */
    public Field[] getField() {
        return field;
    }

    /**
     * @param field - Can be used for setting/resetting this object's FIX fields
     */
    public FixMessage(Field[] field) {
        this.field = field;
    }

    /* (non-Javadoc)
     * @see net.openhft.fix.include.v42.FixMessageInterface#getMajor()
     */
    public int getMajor() {
        return major;
    }

    /* (non-Javadoc)
     * @see net.openhft.fix.include.v42.FixMessageInterface#getMinor()
     */
    public int getMinor() {
        return minor;
    }

    /* (non-Javadoc)
     * @see net.openhft.fix.include.v42.FixMessageInterface#getServicepack()
     */
    public int getServicepack() {
        return servicepack;
    }

    /* (non-Javadoc)
     * @see net.openhft.fix.include.v42.FixMessageInterface#getType()
     */
    public CharSequence getType() {
        return type;
    }

    /**
     * @param fieldLocation- Position of this field in the array
     * @return - Field Object corresponding to the position of the fieldLocation
     */
    public Field getField(int fieldLocation) {
        //System.out.println(fieldLocation +
        // "====="+FixConstants.fieldsNumber[FixConstants.fieldsNumber.length-1]);
        if ((fieldLocation >= 0) &&
        	(fieldLocation < this.field.length)) {
            return this.field[fieldLocation - 1];
        } else {
        	return null;
        }
    }

    /**
     * @return -String value of this FIX object
     */
    public String getFixString() {//depends on your business logic
        //8|9|35|34
        int msgSize = 0;
        this.fixMsgOutput = new StringBuilder();
        this.fixMsgOutput.setLength(0);
        this.fixMsgOutput.append(FixConstants.fieldsNumber[7]);
        this.fixMsgOutput.append(this.equalsChar);
        this.fixMsgOutput.append(this.type);
        this.fixMsgOutput.append(this.major);
        this.fixMsgOutput.append(this.minor);
        this.fixMsgOutput.append(this.servicepack);
        this.fixMsgOutput.append(this.delim);
        if (field != null) {
            for (int i = 0; i < field.length; i++) {
                if (field[i].getFieldDataPostion() > 0 && i != 8) {
                    System.out.println(field[i].getFieldDataPostion());
                    this.fixMsgOutput.append(field[i].getNumber());
                    this.fixMsgOutput.append(this.equalsChar);
                    this.fixMsgOutput.append(field[i].getFieldData().readUTF());
                    this.fixMsgOutput.append(this.delim);
                    msgSize += field[i].getFieldDataPostion();
                }
            }
            this.fixMsgOutput.append(field[8].getNumber());
            this.fixMsgOutput.append(this.equalsChar);
            this.fixMsgOutput.append(msgSize);
            this.fixMsgOutput.append(this.delim);
        }
        return this.fixMsgOutput.toString();
    }

    /* (non-Javadoc)
     * @see java.io.Externalizable#writeExternal(java.io.ObjectOutput)
     */
    @Override
    public void writeExternal(ObjectOutput out) throws IOException {
        out.writeInt(major);
        out.writeInt(minor);
        out.writeInt(servicepack);
        out.writeUTF((String) type);
        out.writeObject(this.fixMsgOutput);
        out.writeChar(delim);
    }

    /**
     * @return - checksum of tag10 value
     */
    public int getCheckSum() {
        int checksum = 0;
        if (field != null) {
            for (int i = 0; i < field.length; i++) {
                checksum += field[i].getFieldData().position();
            }
        }
        return checksum % 256;
    }

    /* (non-Javadoc)
     * @see java.io.Externalizable#readExternal(java.io.ObjectInput)
     */
    @Override
    public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
        major = in.readInt();
        minor = in.readInt();
        servicepack = in.readInt();
        type = in.readUTF();
        this.fixMsgOutput = (StringBuilder) in.readObject();
        delim = in.readChar();

    }


    /**
     * checks if the session information of these tags is valid 8|9|34|35|49|56|10
     *
     * @return - 0 for Invalid; 1 for valid
     */
    public int isValid() {
        int validTagArray[] = {8, 9, 34, 35, 49, 56, 10};
        for (int i = 0; i < validTagArray.length; i++) {
            if (field[validTagArray[i] - 1].getFieldData().position() < 1) {
                return 0;
            }
        }

        return 1;
    }


    /**
     * Resets Field[] data
     */
    public void reset() {
        if (field != null) {
            for (int i = 0; i < field.length; i++) {
                field[i].reset();
            }
        }
    }

}