com.credibledoc.iso8583packer.message.MsgField Maven / Gradle / Ivy
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package com.credibledoc.iso8583packer.message;
import com.credibledoc.iso8583packer.FieldBuilder;
import com.credibledoc.iso8583packer.ValueHolder;
import com.credibledoc.iso8583packer.bitmap.BitmapPacker;
import com.credibledoc.iso8583packer.body.BodyPacker;
import com.credibledoc.iso8583packer.length.LengthPacker;
import com.credibledoc.iso8583packer.masking.Masker;
import com.credibledoc.iso8583packer.stringer.StringStringer;
import com.credibledoc.iso8583packer.stringer.Stringer;
import com.credibledoc.iso8583packer.tag.TagPacker;
import java.util.List;
/**
* The data object describes a data structure.
* Instances of the {@link MsgField}s are created with {@link FieldBuilder}.
*
* The {@link FieldBuilder} class contains two main methods,
* {@link ValueHolder#pack()} and {@link ValueHolder#unpack(byte[], int, MsgField)}. These methods
* uses the {@link MsgField} for packing or unpacking {@link MsgValue}s.
*
* In the unpacked state the {@link MsgField} contains some value, see the {@link MsgValue#getBodyValue()} method.
*
* @author Kyrylo Semenko
*/
public class MsgField implements Msg {
/**
* See the {@link Msg#getFieldNum()} description.
*/
private Integer fieldNum;
/**
* See the {@link Msg#getTag()} description.
*/
private Object tag;
/**
* Some fields has no name, others have. This name is used for creation of a dump and for navigation in the graph.
*/
private String name;
/**
* Parent is a node {@link MsgField}. It contains this child in the {@link MsgField#getChildren()} value.
*
* Root field has no parent node.
*/
private MsgField parent;
/**
* Sub fields of this node or ISOMsg. If this {@link MsgField} is a leaf, this value is 'null'.
*/
private List children;
/**
* Packs {@link MsgValue#getBodyValue()}s to {@link MsgValue#getBodyBytes()} and wise versa. See the {@link BodyPacker}
* and its methods description.
*/
private BodyPacker bodyPacker;
/**
* Not cloned to other fields. Defines the maximum size of a value packed to bytes.
* If the value packed to bytes is greater than
* maxLen, then an exception will be thrown during the packing.
*/
private Integer maxLen;
/**
* The number of bytes the field contains in its packed state.
*
* It used for fixed length fields only.
*/
private Integer len;
/**
* Packs and unpacks the {@link #tag} subfield. Only one tagPacker or {@link #childrenLengthPacker} is allowed.
*/
private TagPacker tagPacker;
/**
* Packs and unpacks the children ({@link #children}) {@link #tag} subfields.
* Only one {@link #tagPacker} or childrenLengthPacker is allowed.
*/
private TagPacker childrenTagPacker;
/**
* Packs and unpacks length of children fields. This value should be defined when the length sub-field
* precedes the tag sub-field,
* for example F0F0F3 F9F3 F0, where F0F0F3 is the length 003, F9F3 is the tag 93 and F0 is the body.
*
* Only one {@link LengthPacker} can be defined, parent childrenLengthPacker or its child length packer. Else the
* exception will be thrown.
*/
private LengthPacker childrenLengthPacker;
/**
* If this field exists, the {@link MsgValue#getBodyBytes()} value must be exactly n bytes long.
* Used for validation purposes only.
*/
private Integer exactlyLength;
/**
* The {@link MsgFieldType} defines Tag, Length and Value sub-fields presents and order.
*/
private MsgFieldType type;
/**
* Masker hides private sensitive data before logging.
*/
private Masker masker;
/**
* Stringer converts the {@link MsgValue#getBodyValue()} to {@link String} for logging purposes.
*/
private Stringer stringer;
/**
* Packs from int to bytes and wise versa the {@link MsgValue#getLengthBytes()} subfield.
*
* The calculated value says how many bytes contains the {@link MsgValue#getBodyBytes()} subfield.
*
* Only one {@link LengthPacker} can be defined, parent {@link MsgField#getChildrenLengthPacker()}
* or the lengthPacker. Else an exception is thrown.
*/
private LengthPacker lengthPacker;
/**
* Packs and unpacks bytes of the {@link MsgValue#getBitSet()} subfield.
*/
private BitmapPacker bitMapPacker;
public MsgField() {
this.stringer = StringStringer.getInstance();
}
@Override
public String toString() {
String bodyPackerClass = bodyPacker == null ? "null" : bodyPacker.getClass().getSimpleName();
String parentString = parent == null ? "null" : parent.getName();
String childrenSizeString = children == null ? "0" : Integer.toString(children.size());
String tagPackerString = tagPacker == null ? "null" : tagPacker.getClass().getSimpleName();
String childrenTagPackerString = childrenTagPacker == null ? "null" : childrenTagPacker.getClass().getSimpleName();
String maskerString = masker == null ? "null" : masker.getClass().getSimpleName();
String stringerString = stringer == null ? "null" : stringer.getClass().getSimpleName();
String lengthPackerString = lengthPacker == null ? "null" : lengthPacker.getClass().getSimpleName();
String bitMapPackerString = bitMapPacker == null ? "null" : bitMapPacker.getClass().getSimpleName();
return "Field{" +
"fieldNum=" + fieldNum +
", tag=" + tag +
", name=" + name +
", type=" + type +
", parent=" + parentString +
", childrenSize=" + childrenSizeString +
", bodyPacker=" + bodyPackerClass +
", masker=" + maskerString +
", stringer=" + stringerString +
", maxLen=" + maxLen +
", len=" + len +
", tagPacker=" + tagPackerString +
", childrenTagPacker=" + childrenTagPackerString +
", exactlyLength=" + exactlyLength +
", lengthPacker=" + lengthPackerString +
", bitMapPacker=" + bitMapPackerString +
'}';
}
/**
* @return The {@link #fieldNum} field value.
*/
@Override
public Integer getFieldNum() {
return fieldNum;
}
/**
* @param fieldNum see the {@link #fieldNum} field description.
*/
public void setFieldNum(Integer fieldNum) {
this.fieldNum = fieldNum;
}
/**
* @return The {@link #tag} field value.
*/
@Override
public Object getTag() {
return tag;
}
/**
* @param type required type of returned {@link #tag}.
* @param the required type.
* @return The {@link #tag} casted to the required type.
*/
public T getTag(Class type) {
return type.cast(getTag());
}
/**
* @param tag see the {@link #tag} field description.
*/
public void setTag(Object tag) {
this.tag = tag;
}
/**
* @return The {@link #name} field value.
*/
@Override
public String getName() {
return name;
}
/**
* @param name see the {@link #name} field description.
*/
public void setName(String name) {
this.name = name;
}
/**
* @return The {@link #parent} field value.
*/
@Override
public MsgField getParent() {
return parent;
}
/**
* @param parent see the {@link #parent} field description.
*/
public void setParent(MsgField parent) {
this.parent = parent;
}
/**
* @return The {@link #children} field value.
*/
@Override
public List getChildren() {
return children;
}
/**
* @param children see the {@link #children} field description.
*/
public void setChildren(List children) {
this.children = children;
}
/**
* @return The {@link #maxLen} field value.
*/
public Integer getMaxLen() {
return maxLen;
}
/**
* @param maxLen see the {@link #maxLen} field description.
*/
public void setMaxLen(Integer maxLen) {
this.maxLen = maxLen;
}
/**
* @return The {@link #len} field value.
*/
public Integer getLen() {
return len;
}
/**
* @param len see the {@link #len} field description.
*/
public void setLen(Integer len) {
this.len = len;
}
/**
* @return The {@link #bodyPacker} field value.
*/
public BodyPacker getBodyPacker() {
return bodyPacker;
}
/**
* @param bodyPacker see the {@link #bodyPacker} field description.
*/
public void setBodyPacker(BodyPacker bodyPacker) {
this.bodyPacker = bodyPacker;
}
/**
* @return The {@link #tagPacker} field value.
*/
public TagPacker getTagPacker() {
return tagPacker;
}
/**
* @param tagPacker see the {@link #tagPacker} field description.
*/
public void setTagPacker(TagPacker tagPacker) {
this.tagPacker = tagPacker;
}
/**
* @return The {@link #childrenTagPacker} field value.
*/
public TagPacker getChildrenTagPacker() {
return childrenTagPacker;
}
/**
* @param childrenTagPacker see the {@link #childrenTagPacker} field description.
*/
public void setChildrenTagPacker(TagPacker childrenTagPacker) {
this.childrenTagPacker = childrenTagPacker;
}
/**
* @return The {@link #childrenLengthPacker} field value.
*/
public LengthPacker getChildrenLengthPacker() {
return childrenLengthPacker;
}
/**
* @param childrenLengthPacker see the {@link #childrenLengthPacker} field description.
*/
public void setChildrenLengthPacker(LengthPacker childrenLengthPacker) {
this.childrenLengthPacker = childrenLengthPacker;
}
/**
* @return The {@link #exactlyLength} field value.
*/
public Integer getExactlyLength() {
return exactlyLength;
}
/**
* @param exactlyLength see the {@link #exactlyLength} field description.
*/
public void setExactlyLength(Integer exactlyLength) {
this.exactlyLength = exactlyLength;
}
/**
* @return The {@link #type} field value.
*/
public MsgFieldType getType() {
return type;
}
/**
* @param type see the {@link #type} field description.
*/
public void setType(MsgFieldType type) {
this.type = type;
}
/**
* @return The {@link #masker} field value.
*/
public Masker getMasker() {
return masker;
}
/**
* @param masker see the {@link #masker} field description.
*/
public void setMasker(Masker masker) {
this.masker = masker;
}
/**
* @return The {@link #stringer} field value.
*/
public Stringer getStringer() {
return stringer;
}
/**
* @param stringer see the {@link #stringer} field description.
*/
public void setStringer(Stringer stringer) {
this.stringer = stringer;
}
/**
* @return The {@link #lengthPacker} field value.
*/
public LengthPacker getLengthPacker() {
return lengthPacker;
}
/**
* @param lengthPacker see the {@link #lengthPacker} field description.
*/
public void setLengthPacker(LengthPacker lengthPacker) {
this.lengthPacker = lengthPacker;
}
/**
* @return The {@link #bitMapPacker} field value.
*/
public BitmapPacker getBitMapPacker() {
return bitMapPacker;
}
/**
* @param bitMapPacker see the {@link #bitMapPacker} field description.
*/
public void setBitMapPacker(BitmapPacker bitMapPacker) {
this.bitMapPacker = bitMapPacker;
}
}