com.avaje.ebeaninternal.api.HashQueryPlanBuilder Maven / Gradle / Ivy
package com.avaje.ebeaninternal.api;
import java.util.Set;
/**
* Used to build HashQueryPlan instances.
*/
public class HashQueryPlanBuilder {
private int planHash;
private int bindCount;
public HashQueryPlanBuilder() {
this.planHash = 92821;
}
public String toString() {
return planHash+":"+bindCount;
}
/**
* Add a class to the hash calculation.
*/
public HashQueryPlanBuilder add(Class cls) {
planHash = planHash * 92821 + cls.getName().hashCode();
return this;
}
/**
* Add an object to the hash calculation.
*/
public HashQueryPlanBuilder add(Object object) {
planHash = planHash * 92821 + (object == null ? 0 : object.hashCode());
return this;
}
/**
* Add the set with order being important.
*/
public HashQueryPlanBuilder addOrdered(Set set) {
if (set == null) {
add(false);
} else {
add(true);
for (Object o : set) {
add(o);
}
}
return this;
}
/**
* Add an integer to the hash calculation.
*/
public HashQueryPlanBuilder add(int hashValue) {
planHash = planHash * 92821 + (hashValue);
return this;
}
/**
* Add a boolean to the hash calculation.
*/
public HashQueryPlanBuilder add(boolean booleanValue) {
planHash = planHash * 92821 + (booleanValue ? 92821 : 0);
return this;
}
/**
* Add a number to the bind count for the hash.
*/
public void bind(int extraBindCount) {
bindCount += extraBindCount;
}
public void bindIfNotNull(Object someValue) {
if (someValue != null) {
bindCount++;
}
}
/**
* Build and return the calculated HashQueryPlan.
*/
public String build() {
return planHash+"_"+bindCount;
}
public int getPlanHash() {
return planHash;
}
public int getBindCount() {
return bindCount;
}
}