com.bing.excel.vo.ListRow Maven / Gradle / Ivy
package com.bing.excel.vo;
import com.google.common.collect.ImmutableList;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
/**
* listrow 对象
*
* @author shizhongtao
*
* date 2016-2-17 Description:
*/
public class ListRow implements Iterable> {
private List> list = null;
private int minIndex = -1;
private int maxIndex = -1;
/**
* 会创建一个新的arraylist 对象。
*
* @return 返回新的list对象
*/
@Deprecated
public List> getList() {
if (list == null)
return Collections.emptyList();
return ImmutableList.copyOf(list);
}
public ListRow add(CellKV kv) {
if (list == null) {
list = new ArrayList<>();
}
list.add(kv);
int index = kv.getIndex();
if (index < 0) {
throw new IllegalArgumentException("CellKV 中index不合法");
}
if (index > maxIndex) {
maxIndex = index;
}
if (minIndex == -1) {
minIndex = index;
} else {
if (index < minIndex) {
minIndex = index;
}
}
return this;
}
public String toString() {
if (list == null)
return Collections.emptyList().toString();
return list.toString();
}
/**
* 返回对应的array对象，如果kv的index没有对应的arr顺序，用null代替
*
* @return
*/
public String[] toFullArray() {
if (maxIndex != -1) {
return toFullArray(maxIndex + 1);
} else {
return new String[0];
}
}
/**
* 返回对应的array对象，如果kv的index没有对应的arr顺序，用null代替
*
* @param length
* @return
*/
public String[] toFullArray(int length) {
String[] arr = new String[length];
if (maxIndex != -1) {
for (CellKV kv : list) {
if (kv.getIndex() < length) {
arr[kv.getIndex()] = kv.getValue();
}
}
}
return arr;
}
public String[] toArray() {
if (maxIndex != -1) {
String[] arr = new String[list.size()];
int i=0;
for (CellKV temp : list) {
arr[i]=temp.getValue();
i++;
}
return arr;
}
return new String[0];
}
public void clear() {
if (list != null) {
list.clear();
}
maxIndex = -1;
minIndex = -1;
}
@Override
public Iterator> iterator() {
if (maxIndex == -1) {
list = new ArrayList>();
}
return list.iterator();
}
public int size() {
if (list != null) {
return list.size();
}
return 0;
}
}