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The top level API module for NoSQLBench. This module should have no internal module dependencies other than the mvn-default module. All modules within NoSQLBench can safely depend on this module with circular dependencies. This module provides cross-cutting code infrastracture, such as path utilities and ways of describing services used between modules. It is also the transitive aggregation point for system-wide library dependencies for logging and testing or similar needs.

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package io.nosqlbench.nb.api.config.params;

import java.util.*;

/**
 * The source data for a param reader is intended to be a collection of something, not a single value.
 * As such, if a single value is provided, an attempt will be made to convert it from JSON if it starts with
 * object or array notation. If not, the value is assumed to be in the simple ParamsParser form.
 */
public class ElementImpl implements Element {

    private final ElementData data;

    public ElementImpl(ElementData data) {
        this.data = data;
    }

    public String getElementName() {
        String name = data.getGivenName();
        if (name!=null) {
            return name;
        }
        return get(ElementData.NAME, String.class).orElse(null);
    }

    public  Optional get(String name, Class classOfT) {
        T found = lookup(data,name, classOfT);
        return Optional.ofNullable(found);
    }

    @Override
    public  Optional get(String name) {
        return Optional.ofNullable(data.lookup(name,null));
    }

    private  T lookup(ElementData data, String name, Class type) {
        return data.lookup(name,type);
//        int idx=name.indexOf('.');
//        while (idx>0) { // TODO: What about when idx==0 ?
//            String parentName = name.substring(0,idx);
//            if (data.containsKey(parentName)) {
//                Object o = data.get(parentName);
//                ElementData parentElement = DataSources.element(o);
//                String childName = name.substring(idx+1);
//                T found = parentElement.lookup(name,type);
//                if (found!=null) {
//                    return found;
//                }
//            }
//            idx=name.indexOf('.',idx+1);
//        }
//        return data.get(name,type);
    }


    public  T getOr(String name, T defaultValue) {
        Class cls = (Class) defaultValue.getClass();
        return get(name, cls).orElse(defaultValue);
    }

    @Override
    public Map getMap() {
        Set keys = this.data.getKeys();
        Map map = new LinkedHashMap<>();

        for (String key : keys) {
            Object value = this.data.get(key);
            map.put(key, value);
        }

        return map;
    }

    @Override
    public String toString() {
        return data.toString();
    }
}