com.eshore.tools.SimpleDataWrap Maven / Gradle / Ivy
package com.eshore.tools;
import java.util.Collection;
import java.util.Date;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.ListIterator;
import java.util.Map;
import java.util.Set;
/**
* 数据包装类，json,yaml,xml数据读到内存中由包装类进行查找处理
* @author eshore
*
*/
public class SimpleDataWrap implements List{
public static int TYPE_MAP=0;
public static int TYPE_ARRAY=1;
public static int TYPE_TEXT=2;
Map map;
List array;
String text;
public void setData(Object o){
if(o instanceof Map){
setData((Map)o);
}else if(o instanceof List){
setData((List)o);
}else {
setData((String)o);
}
}
public Set allKeys(){
if(map==null)return new HashSet();
return map.keySet();
}
public String getText(){
return text;
}
public void setData(Map o){
type=TYPE_MAP;
map=o;
}
public void setData(List o){
type=TYPE_ARRAY;
array=o;
}
public void setData(String o){
type=TYPE_TEXT;
text=o;
}
private int type;
public int getType(){
return type;
}
public Object get(String k){
if(map==null)return null;
Object o =map.get(k);
if(o instanceof String)return o;
SimpleDataWrap sdw =new SimpleDataWrap();
sdw.setData(o);
return sdw;
}
public String getString(String k){
Object o = find(k);
if(!(o instanceof String)) return null;
//if(map==null)return null;
//return (String) map.get(k);
return (String)o;
}
public int getInt(String k){
return StringValue.toInt(getString(k));
}
public long getLong(String k){
return StringValue.toLong(getString(k));
}
public float getFloat(String k){
return StringValue.toFloat(getString(k));
}
public Date getDate(String k){
return StringValue.toDate(getString(k));
}
public double getDouble(String k){
return StringValue.toDouble(getString(k));
}
public boolean getBoolean(String k){
return StringValue.toBoolean(getString(k));
}
@Override
public int size() {
return array==null? 0:array.size();
}
@Override
public boolean isEmpty() {
return array==null? false:array.isEmpty();
}
@Override
public boolean contains(Object o) {
return array==null? false:array.contains(o);
}
@Override
public Iterator iterator() {
Iterator it =array==null?null:array.iterator();
return new Iterator(){
public boolean hasNext() {
if(it==null)return false;
return it.hasNext();
}
public Object next() {
Object o=it.next();
if(o instanceof String) return o;
SimpleDataWrap sdw = new SimpleDataWrap();
sdw.setData(o);
return sdw;
}
};
}
@Override
public Object[] toArray() {
if(array==null)return null;
Object[] ar = new Object[size()];
int i=0;
for(Object o:this){
ar[i++]=o;
}
return ar;
}
@Override
public Object[] toArray(Object[] a) {
return toArray();
}
@Override
public boolean add(Object e) {
if(array!=null){
return array.add(e);
}
return false;
}
@Override
public boolean remove(Object o) {
return false;
}
@Override
public boolean containsAll(Collection c) {
return array==null? false:array.containsAll(c);
}
@Override
public boolean addAll(Collection c) {
return false;
}
@Override
public boolean addAll(int index, Collection c) {
return false;
}
@Override
public boolean removeAll(Collection c) {
return false;
}
@Override
public boolean retainAll(Collection c) {
return false;
}
@Override
public void clear() {
if(array!=null)array.clear();
}
@Override
public Object get(int index) {
if(array==null)return null;
Object o =array.get(index);
if(o instanceof String) return o;
SimpleDataWrap sdw = new SimpleDataWrap();
sdw.setData(o);
return sdw;
}
@Override
public Object set(int index, Object element) {
return null;
}
@Override
public void add(int index, Object element) {
}
@Override
public Object remove(int index) {
return array==null?null:array.remove(index);
}
@Override
public int indexOf(Object o) {
return array==null? -1:array.indexOf(o);
}
@Override
public int lastIndexOf(Object o) {
return array==null? -1:array.lastIndexOf(o);
}
@Override
public ListIterator listIterator() {
return array==null? null:array.listIterator();
}
@Override
public ListIterator listIterator(int index) {
return array==null? null:array.listIterator(index);
}
@Override
public List subList(int fromIndex, int toIndex) {
return array==null? null:array.subList(fromIndex,toIndex);
}
public String toString(){
StringBuilder sb = new StringBuilder();
toString(sb,this);
return sb.toString();
}
private void toString(StringBuilder sb,SimpleDataWrap sdw){
if(sdw.getType()==TYPE_MAP){
sb.append("{");
Set set =sdw.allKeys();
boolean isFirst=true;
for(String k:set){
if(isFirst){
isFirst=false;
}else{
sb.append(",");
}
sb.append("\"").append(k).append("\" : ");
Object o=sdw.get(k);
if(o instanceof SimpleDataWrap){
toString(sb,(SimpleDataWrap)o);
}else{
sb.append("\"").append(o).append("\"");
}
}
sb.append("}");
}else if(sdw.getType()==TYPE_ARRAY){
sb.append("[");
boolean isFirst=true;
for(Object o:sdw){
if(isFirst){
isFirst=false;
}else{
sb.append(",");
}
if(o instanceof SimpleDataWrap){
toString(sb,(SimpleDataWrap)o);
}else{
sb.append("\"").append(o).append("\"");
}
}
sb.append("]");
}else{
sb.append("\"").append(sdw.getText()).append("\"");
}
}
/**
* 按路径查找值
* 按JSON 的语法查找如：
* 给定如下的数据[{personList:[1,2,3,4]}]
* find("[0].personList[3]") 的结果是4
*
* @param path 路径
* @return 查找结果(String||SimpleDataWrap)
*/
public Object find(String path){
path=path.replaceAll("\\] *\\[", "].[");
String [] paths =path.split("\\.");
Object o=null;
SimpleDataWrap flag =this;
for(String p:paths){
if(flag==null)return null;
String k=p;
int index=-1;
if(k.indexOf('[')>-1){
k=p.substring(0, p.indexOf('['));
try{
index=Integer.parseInt(p.substring(p.indexOf('[')+1, p.lastIndexOf(']')));
}catch(Exception e){
return null;
}
}
if(flag.getType()==TYPE_MAP){
o=flag.get(k);
if(index>-1){
if(!(o instanceof SimpleDataWrap))return null;
SimpleDataWrap array =(SimpleDataWrap)o;
o=array.get(index);
}
}else if(flag.getType()==TYPE_ARRAY){
o=flag.get(index);
}
if(o instanceof SimpleDataWrap){
flag=(SimpleDataWrap)o;
}else{
flag=null;
}
}
return o;
}
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy