java常用组件--Hibernate QueryParameters
/**
*
*/
package cn.ccb.jstsccf.common.dao.utils;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
/**
* @author ghl
*
*/
public class QueryParameters {
private List list;
public QueryParameters() {
list = new ArrayList(3);
}
public QueryParameters add(String propName, Object propValue) {
list.add(new Paramter(propName, propValue, null));
return this;
}
public QueryParameters addOrder(String propName) {
return addOrder(propName, true);
}
public QueryParameters addOrder(String propName, boolean ascending) {
list.add(new Order(propName, ascending, null));
return this;
}
public void removeOrderByName(String propName) {
if (propName == null)
return;
for (int i = 0; i < list.size(); i++) {
Object obj = list.get(i);
if (obj instanceof Order) {
Order order = (Order) obj;
if (propName.equals(order.propName))
list.remove(obj);
}
}
}
public void removeAllOrder() {
for (int i = 0; i < list.size(); i++) {
Object obj = list.get(i);
if (obj instanceof Order)
list.remove(obj);
}
}
public QueryParameters groupby(String propNames[]) {
list.add(new GroupBy(propNames, null));
return this;
}
public QueryParameters addProperties(String properties[]) {
list.add(new Properties(properties, null));
return this;
}
public QueryParameters sum(String propName) {
list.add(new Sum(propName, null));
return this;
}
public QueryParameters max(String propName) {
list.add(new Max(propName, null));
return this;
}
public QueryParameters min(String propName) {
list.add(new Min(propName, null));
return this;
}
public QueryParameters isNull(String propName) {
list.add(new Null(propName));
return this;
}
public QueryParameters isNotNull(String propName) {
list.add(new NotNull(propName));
return this;
}
public QueryParameters notEquals(String propName, Object propValue) {
list.add(new NotEquals(propName, propValue));
return this;
}
private static class Order {
private String propName;
private boolean ascending;
private Order(String propName, boolean ascending) {
this.propName = propName;
this.ascending = ascending;
}
Order(String s, boolean flag, Order order) {
this(s, flag);
}
}
private static class GroupBy {
private String propNames[];
private GroupBy(String propNames[]) {
this.propNames = propNames;
}
GroupBy(String as[], GroupBy groupby1) {
this(as);
}
}
private static class Properties {
private String properties[];
private Properties(String propList[]) {
properties = propList;
}
Properties(String as[], Properties properties1) {
this(as);
}
}
private static class Sum {
private String propName;
private Sum(String propName) {
this.propName = propName;
}
Sum(String s, Sum sum1) {
this(s);
}
}
private static class Max {
private String propName;
private Max(String propName) {
this.propName = propName;
}
Max(String s, Max max1) {
this(s);
}
}
private static class Min {
private String propName;
private Min(String propName) {
this.propName = propName;
}
Min(String s, Min min1) {
this(s);
}
}
public static class Paramter {
private String propName;
private Object propValue;
public String getPropName() {
return propName;
}
public Object getPropValue() {
return propValue;
}
private Paramter(String propName, Object propValue) {
this.propName = propName;
this.propValue = propValue;
}
Paramter(String s, Object obj, Paramter paramter) {
this(s, obj);
}
}
public static final class Pattern {
public String getPattern() {
return pattern;
}
private String pattern;
Pattern(String text) {
pattern = text;
}
}
public static class Null {
public String getPropName() {
return propName;
}
public void setPropName(String propName) {
this.propName = propName;
}
private String propName;
Null(String propName) {
this.propName = propName;
}
}
public static class NotNull {
public String getPropName() {
return propName;
}
public void setPropName(String propName) {
this.propName = propName;
}
private String propName;
NotNull(String propName) {
this.propName = propName;
}
}
public static class NotEquals{
private String propName;
private Object propValue;
public String getPropName() {
return propName;
}
public Object getPropValue() {
return propValue;
}
public NotEquals(String propName, Object propValue) {
this.propName = propName;
this.propValue = propValue;
}
}
public static interface Compiler {
public abstract Object compile(QueryParameters queryparameters);
}
public static abstract class AbstractCompiler implements Compiler {
public Object compile(QueryParameters params) {
for (Iterator iterator = params.list.iterator(); iterator.hasNext();) {
Object e = iterator.next();
if (e instanceof Paramter) {
Paramter p = (Paramter) e;
Object propValue = p.getPropValue();
if (propValue instanceof Range)
range(p.getPropName(), (Range) propValue);
else if (propValue instanceof Pattern)
like(p.getPropName(), ((Pattern) propValue)
.getPattern());
else if (propValue instanceof Set)
in(p.getPropName(), (Set) propValue);
else
eq(p.getPropName(), propValue);
} else if (e instanceof Properties) {
Properties p = (Properties) e;
properties(p.properties);
} else if (e instanceof GroupBy) {
GroupBy g = (GroupBy) e;
groupBy(g.propNames);
} else if (e instanceof Order) {
Order o = (Order) e;
order(o.propName, o.ascending);
} else if (e instanceof Sum) {
Sum s = (Sum) e;
sum(s.propName);
} else if (e instanceof Max) {
Max m = (Max) e;
max(m.propName);
} else if (e instanceof Min) {
Min m = (Min) e;
min(m.propName);
} else if (e instanceof Null) {
Null m = (Null) e;
isNull(m.propName);
}else if (e instanceof NotNull) {
NotNull m = (NotNull) e;
isNotNull(m.propName);
}else if (e instanceof NotEquals) {
NotEquals ne = (NotEquals) e;
ne(ne.getPropName(), ne.getPropValue());
}
}
return getAssembly();
}
protected abstract Object getAssembly();
protected void range(String propName, Range range) {
if (range.hasHighLimit() && range.hasLowLimit()
&& range.inRange(range.getLow())
&& range.inRange(range.getHigh())) {
between(propName, range.getLow(), range.getHigh());
return;
}
if (range.hasLowLimit())
if (range.inRange(range.getLow()))
ge(propName, range.getLow());
else
gt(propName, range.getLow());
if (range.hasHighLimit())
if (range.inRange(range.getHigh()))
le(propName, range.getHigh());
else
lt(propName, range.getHigh());
}
protected abstract void eq(String s, Object obj);
protected abstract void ne(String s, Object obj);
protected abstract void lt(String s, Object obj);
protected abstract void le(String s, Object obj);
protected abstract void gt(String s, Object obj);
protected abstract void ge(String s, Object obj);
protected abstract void between(String s, Object obj, Object obj1);
protected abstract void in(String s, Set set);
protected abstract void like(String s, String s1);
protected abstract void order(String s, boolean flag);
protected abstract void groupBy(String as[]);
protected abstract void properties(String as[]);
protected abstract void sum(String s);
protected abstract void max(String s);
protected abstract void min(String s);
protected abstract void isNull(String s);
protected abstract void isNotNull(String propName);
public AbstractCompiler() {
}
}
}
