foundation.jpa.querydsl.QueryVariables Maven / Gradle / Ivy
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* BSD 2-Clause License
*
* Copyright (c) 2020-2020, Ondrej Fischer
* All rights reserved.
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* modification, are permitted provided that the following conditions are met:
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* list of conditions and the following disclaimer.
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package foundation.jpa.querydsl;
import java.util.Map;
public interface QueryVariables {
Object get(String name);
boolean isDefined(String name);
static QueryVariables none() {
return new QueryVariables() {
@Override
public Object get(String name) {
return null;
}
@Override
public boolean isDefined(String name) {
return false;
}
};
}
static QueryVariables map(Map values) {
return new QueryVariables() {
@Override
public Object get(String name) {
return values.get(name);
}
@Override
public boolean isDefined(String name) {
return values.containsKey(name);
}
};
}
static QueryVariables local(Map values, QueryVariables parent) {
return new QueryVariables() {
@Override
public Object get(String name) {
return values.containsKey(name) ? values.get(name) : parent.get(name);
}
@Override
public boolean isDefined(String name) {
return values.containsKey(name) || parent.isDefined(name);
}
};
}
}