ars.file.query.Queries Maven / Gradle / Ivy
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package ars.file.query;
import java.io.File;
import java.util.Date;
import java.util.List;
import java.util.Arrays;
import java.util.Comparator;
import java.util.Collections;
import ars.util.Beans;
import ars.util.Dates;
import ars.file.Describe;
import ars.file.Describe.Property;
/**
* 文件查询操作工具类
*
* @author wuyq
*/
public final class Queries {
private Queries() {
}
/**
* 查询条件接口
*
* @author wuyongqiang
*/
public static interface Condition {
}
/**
* 等于条件
*
* @author wuyongqiang
*/
public static class Equal implements Condition {
private Property property; // 比较属性
private Object value; // 比较值
public Equal(Property property, Object value) {
if (property == null) {
throw new IllegalArgumentException("Property must not be null");
}
if (value == null) {
throw new IllegalArgumentException("Value must not be null");
}
this.property = property;
this.value = value;
}
public Property getProperty() {
return property;
}
public Object getValue() {
return value;
}
}
/**
* 不等于
*
* @author wuyongqiang
*/
public static class NotEqual implements Condition {
private Property property; // 比较属性
private Object value; // 比较值
public NotEqual(Property property, Object value) {
if (property == null) {
throw new IllegalArgumentException("Property must not be null");
}
if (value == null) {
throw new IllegalArgumentException("Value must not be null");
}
this.property = property;
this.value = value;
}
public Property getProperty() {
return property;
}
public Object getValue() {
return value;
}
}
/**
* 大于
*
* @author wuyongqiang
*/
public static class Large implements Condition {
private Property property; // 比较属性
private Object value; // 比较值
public Large(Property property, Object value) {
if (property == null) {
throw new IllegalArgumentException("Property must not be null");
}
if (value == null) {
throw new IllegalArgumentException("Value must not be null");
}
this.property = property;
this.value = value;
}
public Property getProperty() {
return property;
}
public Object getValue() {
return value;
}
}
/**
* 大于或等于
*
* @author wuyongqiang
*/
public static class LargeEqual implements Condition {
private Property property; // 比较属性
private Object value; // 比较值
public LargeEqual(Property property, Object value) {
if (property == null) {
throw new IllegalArgumentException("Property must not be null");
}
if (value == null) {
throw new IllegalArgumentException("Value must not be null");
}
this.property = property;
this.value = value;
}
public Property getProperty() {
return property;
}
public Object getValue() {
return value;
}
}
/**
* 小于
*
* @author wuyongqiang
*/
public static class Less implements Condition {
private Property property; // 比较属性
private Object value; // 比较值
public Less(Property property, Object value) {
if (property == null) {
throw new IllegalArgumentException("Property must not be null");
}
if (value == null) {
throw new IllegalArgumentException("Value must not be null");
}
this.property = property;
this.value = value;
}
public Property getProperty() {
return property;
}
public Object getValue() {
return value;
}
}
/**
* 小于或等于
*
* @author wuyongqiang
*/
public static class LessEqual implements Condition {
private Property property; // 比较属性
private Object value; // 比较值
public LessEqual(Property property, Object value) {
if (property == null) {
throw new IllegalArgumentException("Property must not be null");
}
if (value == null) {
throw new IllegalArgumentException("Value must not be null");
}
this.property = property;
this.value = value;
}
public Property getProperty() {
return property;
}
public Object getValue() {
return value;
}
}
/**
* 大于和小于
*
* @author wuyongqiang
*/
public static class Between implements Condition {
private Property property; // 比较属性
private Object low; // 低值
private Object high; // 高值
public Between(Property property, Object low, Object high) {
if (property == null) {
throw new IllegalArgumentException("Property must not be null");
}
if (low == null) {
throw new IllegalArgumentException("Low must not be null");
}
if (high == null) {
throw new IllegalArgumentException("High must not be null");
}
this.property = property;
this.low = low;
this.high = high;
}
public Property getProperty() {
return property;
}
public Object getLow() {
return low;
}
public Object getHigh() {
return high;
}
}
/**
* 模糊匹配
*
* @author wuyongqiang
*/
public static class Like implements Condition {
private Property property; // 比较属性
private String value; // 比较值
private Position position; // 比较位置
public Like(Property property, String value) {
this(property, value, Position.ANY);
}
public Like(Property property, String value, Position position) {
if (property == null) {
throw new IllegalArgumentException("Property must not be null");
}
if (value == null) {
throw new IllegalArgumentException("Value must not be null");
}
if (position == null) {
throw new IllegalArgumentException("Position must not be null");
}
this.property = property;
this.value = value;
this.position = position;
}
public Property getProperty() {
return property;
}
public String getValue() {
return value;
}
public Position getPosition() {
return position;
}
/**
* 匹配位置
*
* @author wuyongqiang
*/
public enum Position {
/**
* 开始位置
*/
BEGIN,
/**
* 结束位置
*/
END,
/**
* 任何位置
*/
ANY;
}
}
/**
* 排序条件
*
* @author wuyongqiang
*/
public static class Order implements Condition {
private Property property; // 排序属性
public Order(Property property) {
if (property == null) {
throw new IllegalArgumentException("Property must not be null");
}
this.property = property;
}
public Property getProperty() {
return property;
}
}
/**
* 升序排序条件
*
* @author wuyongqiang
*/
public static class Asc extends Order {
public Asc(Property property) {
super(property);
}
}
/**
* 降序排序条件
*
* @author wuyongqiang
*/
public static class Desc extends Order {
public Desc(Property property) {
super(property);
}
}
/**
* 等于
*
* @param property 属性
* @param value 属性值
* @return 条件对象
*/
public static Equal eq(Property property, Object value) {
return new Equal(property, valueAdapter(property, value));
}
/**
* 不等于
*
* @param property 属性
* @param value 属性值
* @return 条件对象
*/
public static NotEqual ne(Property property, Object value) {
return new NotEqual(property, valueAdapter(property, value));
}
/**
* 大于
*
* @param property 属性
* @param value 属性值
* @return 条件对象
*/
public static Large gt(Property property, Object value) {
return new Large(property, valueAdapter(property, value));
}
/**
* 大于或等于
*
* @param property 属性
* @param value 属性值
* @return 条件对象
*/
public static LargeEqual ge(Property property, Object value) {
return new LargeEqual(property, valueAdapter(property, value));
}
/**
* 小于
*
* @param property 属性
* @param value 属性值
* @return 条件对象
*/
public static Less lt(Property property, Object value) {
return new Less(property, valueAdapter(property, value));
}
/**
* 小于或等于
*
* @param property 属性
* @param value 属性值
* @return 条件对象
*/
public static LessEqual le(Property property, Object value) {
return new LessEqual(property, valueAdapter(property, value));
}
/**
* 属性值在两个值之间
*
* @param property 属性
* @param low 低值
* @param high 高值
* @return 条件对象
*/
public static Between between(Property property, Object low, Object high) {
return new Between(property, valueAdapter(property, low), valueAdapter(property, high));
}
/**
* 包含指定字符串
*
* @param property 属性
* @param value 属性值
* @param position 匹配位置
* @return 条件对象
*/
public static Like like(Property property, String value, Like.Position position) {
return new Like(property, value, position);
}
/**
* 升序条件
*
* @param property 属性
* @return 条件对象
*/
public static Asc asc(Property property) {
return new Asc(property);
}
/**
* 降序条件
*
* @param property 属性
* @return 条件对象
*/
public static Desc desc(Property property) {
return new Desc(property);
}
/**
* 将值类型转换成属性对应类型
*
* @param property 属性
* @param value 值
* @return 转换后的值
*/
public static Object valueAdapter(Property property, Object value) {
if (property == null) {
throw new IllegalArgumentException("Property must not be null");
}
boolean array = value != null && value.getClass().isArray();
if (property == Property.NAME) {
return array ? Beans.toArray(String.class, value) : Beans.toObject(String.class, value);
} else if (property == Property.SIZE) {
return array ? Beans.toArray(long.class, value) : Beans.toObject(long.class, value);
} else if (property == Property.MODIFIED) {
return array ? Beans.toArray(Date.class, value) : Beans.toObject(Date.class, value);
}
return array ? Beans.toArray(boolean.class, value) : Beans.toObject(boolean.class, value);
}
/**
* 判断文件描述是否满足小于条件
*
* @param describe 文件描述对象
* @param less 小于条件
* @return true/false
*/
public static boolean isSatisfy(Describe describe, Less less) {
if (describe == null) {
throw new IllegalArgumentException("Describe must not be null");
}
if (less == null) {
throw new IllegalArgumentException("Less must not be null");
}
Property property = less.getProperty();
Object value = less.getValue();
if (property == Property.NAME && describe.getName().compareToIgnoreCase((String) value) > -1) {
return false;
} else if (property == Property.SIZE && describe.getSize() >= (Long) value) {
return false;
} else if (property == Property.MODIFIED && !describe.getModified().before((Date) value)) {
return false;
}
return describe.isDirectory() == false && (Boolean) value == true;
}
/**
* 判断文件描述是否满足模糊匹配条件
*
* @param describe 文件描述对象
* @param like 模糊匹配条件
* @return true/false
*/
public static boolean isSatisfy(Describe describe, Like like) {
if (describe == null) {
throw new IllegalArgumentException("Describe must not be null");
}
if (like == null) {
throw new IllegalArgumentException("Like must not be null");
}
Property property = like.getProperty();
String value = like.getValue().toUpperCase();
Like.Position position = like.getPosition();
String source = null;
if (property == Property.NAME) {
source = describe.getName().toUpperCase();
} else if (property == Property.SIZE) {
source = String.valueOf(describe.getSize());
} else if (property == Property.MODIFIED) {
source = Dates.format(describe.getModified());
} else {
source = String.valueOf(describe.isDirectory());
}
if (position == Like.Position.BEGIN && source.indexOf(value) > 0) {
return false;
} else if (position == Like.Position.END && source.length() > source.lastIndexOf(value) + value.length()) {
return false;
} else if (position == Like.Position.ANY && source.indexOf(value) < 0) {
return false;
}
return true;
}
/**
* 判断文件描述是否满足等于条件
*
* @param describe 文件描述对象
* @param equal 等于条件
* @return true/false
*/
public static boolean isSatisfy(Describe describe, Equal equal) {
if (describe == null) {
throw new IllegalArgumentException("Describe must not be null");
}
if (equal == null) {
throw new IllegalArgumentException("Equal must not be null");
}
Property property = equal.getProperty();
Object value = equal.getValue();
int matched = 0;
if (property == Property.NAME) {
if (value instanceof String[]) {
for (String name : (String[]) value) {
if (describe.getName().equalsIgnoreCase(name)) {
matched++;
break;
}
}
} else if (describe.getName().equalsIgnoreCase((String) value)) {
matched++;
}
} else if (property == Property.SIZE) {
if (value instanceof long[]) {
for (long size : (long[]) value) {
if (describe.getSize() == size) {
matched++;
break;
}
}
} else if (describe.getSize() == (Long) value) {
matched++;
}
} else if (property == Property.MODIFIED) {
if (value instanceof Date[]) {
for (Date date : (Date[]) value) {
if (describe.getModified().compareTo(date) == 0) {
matched++;
break;
}
}
} else if (describe.getModified().compareTo((Date) value) == 0) {
matched++;
}
} else {
if (value instanceof boolean[]) {
for (boolean directory : (boolean[]) value) {
if (describe.isDirectory() == directory) {
matched++;
break;
}
}
} else if (describe.isDirectory() == (Boolean) value) {
matched++;
}
}
return matched > 0;
}
/**
* 判断文件描述是否满足大于条件
*
* @param describe 文件描述对象
* @param large 大于条件
* @return true/false
*/
public static boolean isSatisfy(Describe describe, Large large) {
if (describe == null) {
throw new IllegalArgumentException("Describe must not be null");
}
if (large == null) {
throw new IllegalArgumentException("Large must not be null");
}
Property property = large.getProperty();
Object value = large.getValue();
if (property == Property.NAME && describe.getName().compareToIgnoreCase((String) value) < 0) {
return false;
} else if (property == Property.SIZE && describe.getSize() <= (Long) value) {
return false;
} else if (property == Property.MODIFIED && !describe.getModified().after((Date) value)) {
return false;
}
return describe.isDirectory() == true && (Boolean) value == false;
}
/**
* 判断文件描述是否满足大于小于条件
*
* @param describe 文件描述对象
* @param between 大于小于条件
* @return true/false
*/
public static boolean isSatisfy(Describe describe, Between between) {
if (describe == null) {
throw new IllegalArgumentException("Describe must not be null");
}
if (between == null) {
throw new IllegalArgumentException("Between must not be null");
}
Property property = between.getProperty();
Object low = between.getLow();
Object high = between.getHigh();
if (property == Property.NAME
&& (describe.getName().compareToIgnoreCase((String) low) < 0 || describe.getName().compareToIgnoreCase(
(String) high) > 0)) {
return false;
} else if (property == Property.SIZE && (describe.getSize() < (Long) low || describe.getSize() > (Long) high)) {
return false;
} else if (property == Property.MODIFIED
&& (describe.getModified().before((Date) low) || describe.getModified().after((Date) high))) {
return false;
}
return true;
}
/**
* 判断文件描述是否满足不等于条件
*
* @param describe 文件描述对象
* @param notEqual 不等于条件
* @return true/false
*/
public static boolean isSatisfy(Describe describe, NotEqual notEqual) {
if (describe == null) {
throw new IllegalArgumentException("Describe must not be null");
}
if (notEqual == null) {
throw new IllegalArgumentException("NotEqual must not be null");
}
Property property = notEqual.getProperty();
Object value = notEqual.getValue();
if (property == Property.NAME) {
if (value instanceof String[]) {
for (String name : (String[]) value) {
if (describe.getName().equalsIgnoreCase(name)) {
return false;
}
}
} else if (describe.getName().equalsIgnoreCase((String) value)) {
return false;
}
} else if (property == Property.SIZE) {
if (value instanceof long[]) {
for (long size : (long[]) value) {
if (describe.getSize() == size) {
return false;
}
}
} else if (describe.getSize() == (Long) value) {
return false;
}
} else if (property == Property.MODIFIED) {
if (value instanceof Date[]) {
for (Date date : (Date[]) value) {
if (describe.getModified().compareTo(date) == 0) {
return false;
}
}
} else if (describe.getModified().compareTo((Date) value) == 0) {
return false;
}
} else {
if (value instanceof boolean[]) {
for (boolean directory : (boolean[]) value) {
if (describe.isDirectory() == directory) {
return false;
}
}
} else if (describe.isDirectory() == (Boolean) value) {
return false;
}
}
return true;
}
/**
* 判断文件描述是否满足小于或等于条件
*
* @param describe 文件描述对象
* @param lessEqual 小于或等于条件
* @return true/false
*/
public static boolean isSatisfy(Describe describe, LessEqual lessEqual) {
if (describe == null) {
throw new IllegalArgumentException("Describe must not be null");
}
if (lessEqual == null) {
throw new IllegalArgumentException("LessEqual must not be null");
}
Property property = lessEqual.getProperty();
Object value = lessEqual.getValue();
if (property == Property.NAME && describe.getName().compareToIgnoreCase((String) value) > 0) {
return false;
} else if (property == Property.SIZE && describe.getSize() > (Long) value) {
return false;
} else if (property == Property.MODIFIED && describe.getModified().after((Date) value)) {
return false;
}
return describe.isDirectory() == false;
}
/**
* 判断文件描述是否满足大于或等于条件
*
* @param describe 文件描述对象
* @param largeEqual 大于或等于条件
* @return true/false
*/
public static boolean isSatisfy(Describe describe, LargeEqual largeEqual) {
if (describe == null) {
throw new IllegalArgumentException("Describe must not be null");
}
if (largeEqual == null) {
throw new IllegalArgumentException("LargeEqual must not be null");
}
Property property = largeEqual.getProperty();
Object value = largeEqual.getValue();
if (property == Property.NAME && describe.getName().compareToIgnoreCase((String) value) < 0) {
return false;
} else if (property == Property.SIZE && describe.getSize() < (Long) value) {
return false;
} else if (property == Property.MODIFIED && describe.getModified().before((Date) value)) {
return false;
}
return describe.isDirectory() == true;
}
/**
* 判断文件描述是否满足查询条件
*
* @param describe 文件描述对象
* @param conditions 查询条件数组
* @return true/false
*/
public static boolean isSatisfy(Describe describe, Condition... conditions) {
if (describe == null) {
throw new IllegalArgumentException("Describe must not be null");
}
if (conditions == null) {
throw new IllegalArgumentException("Conditions must not be null");
}
for (Condition condition : conditions) {
if (condition instanceof Less && !isSatisfy(describe, (Less) condition)) {
return false;
} else if (condition instanceof Like && !isSatisfy(describe, (Like) condition)) {
return false;
} else if (condition instanceof Equal && !isSatisfy(describe, (Equal) condition)) {
return false;
} else if (condition instanceof Large && !isSatisfy(describe, (Large) condition)) {
return false;
} else if (condition instanceof Between && !isSatisfy(describe, (Between) condition)) {
return false;
} else if (condition instanceof NotEqual && !isSatisfy(describe, (NotEqual) condition)) {
return false;
} else if (condition instanceof LessEqual && !isSatisfy(describe, (LessEqual) condition)) {
return false;
} else if (condition instanceof LargeEqual && !isSatisfy(describe, (LargeEqual) condition)) {
return false;
}
}
return true;
}
/**
* 文件比较
*
* @param source 原文件对象
* @param target 目标文件对象
* @param orders 排序对象
* @return 比较结果
*/
public static int compare(File source, File target, Order... orders) {
if (source == null) {
throw new IllegalArgumentException("Source must not be null");
}
if (target == null) {
throw new IllegalArgumentException("Target must not be null");
}
if (orders == null) {
throw new IllegalArgumentException("Orders must not be null");
}
for (Order order : orders) {
int compare = 0;
Property property = order.getProperty();
if (property == Property.NAME) {
compare = source.getName().compareTo(target.getName());
} else if (property == Property.SIZE) {
long l1 = source.length();
long l2 = target.length();
compare = l1 < l2 ? -1 : l1 == l2 ? 0 : 1;
} else if (property == Property.MODIFIED) {
long m1 = source.lastModified();
long m2 = target.lastModified();
compare = m1 < m2 ? -1 : m1 == m2 ? 0 : 1;
} else if (property == Property.DIRECTORY) {
boolean d1 = source.isDirectory();
boolean d2 = target.isDirectory();
compare = d1 && !d2 ? -1 : d1 == d2 ? 0 : 1;
}
if (compare != 0) {
return order instanceof Asc ? compare : -compare;
}
}
return 0;
}
/**
* 文件描述比较
*
* @param source 文件描述对象
* @param target 文件描述对象
* @param orders 排序对象
* @return 比较结果
*/
public static int compare(Describe source, Describe target, Order... orders) {
if (source == null) {
throw new IllegalArgumentException("Source must not be null");
}
if (target == null) {
throw new IllegalArgumentException("Target must not be null");
}
if (orders == null) {
throw new IllegalArgumentException("Orders must not be null");
}
for (Order order : orders) {
int compare = 0;
Property property = order.getProperty();
if (property == Property.NAME) {
compare = source.getName().compareTo(target.getName());
} else if (property == Property.SIZE) {
long s1 = source.getSize();
long s2 = target.getSize();
compare = s1 < s2 ? -1 : s1 == s2 ? 0 : 1;
} else if (property == Property.MODIFIED) {
compare = source.getModified().compareTo(target.getModified());
} else if (property == Property.DIRECTORY) {
boolean d1 = source.isDirectory();
boolean d2 = target.isDirectory();
compare = d1 && !d2 ? -1 : d1 == d2 ? 0 : 1;
}
if (compare != 0) {
return order instanceof Asc ? compare : -compare;
}
}
return 0;
}
/**
* 对文件列表排序
*
* @param files 文件对象数组
* @param orders 排序对象数组
*/
public static void sort(File[] files, final Order... orders) {
if (files == null) {
throw new IllegalArgumentException("Files must not be null");
}
if (orders == null) {
throw new IllegalArgumentException("Orders must not be null");
}
Arrays.sort(files, new Comparator() {
@Override
public int compare(File o1, File o2) {
return Queries.compare(o1, o2, orders);
}
});
}
/**
* 对文件描述列表排序
*
* @param describes 文件描述对象数组
* @param orders 排序对象数组
*/
public static void sort(Describe[] describes, final Order... orders) {
if (describes == null) {
throw new IllegalArgumentException("Describes must not be null");
}
if (orders == null) {
throw new IllegalArgumentException("Orders must not be null");
}
Arrays.sort(describes, new Comparator() {
@Override
public int compare(Describe o1, Describe o2) {
return Queries.compare(o1, o2, orders);
}
});
}
/**
* 对文件描述列表排序
*
* @param describes 文件描述对象列表
* @param orders 排序对象数组
*/
public static void sort(List describes, final Order... orders) {
if (describes == null) {
throw new IllegalArgumentException("Describes must not be null");
}
if (orders == null) {
throw new IllegalArgumentException("Orders must not be null");
}
Collections.sort(describes, new Comparator() {
@Override
public int compare(Describe o1, Describe o2) {
return Queries.compare(o1, o2, orders);
}
});
}
}
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