net.intelie.liverig.plugin.util.MapUtils Maven / Gradle / Ivy

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package net.intelie.liverig.plugin.util;

import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

import java.util.Collections;
import java.util.List;
import java.util.Map;

public class MapUtils {

    @Nullable
    public static String getString(@NotNull Map map, @NotNull String key) {
        Object value = map.get(key);
        return value instanceof String ? (String) value : null;
    }

    @Nullable
    public static String getAsString(@NotNull Map map, @NotNull String key) {
        Object value = map.get(key);
        return value == null ? null : value.toString();
    }

    @Nullable
    public static Boolean getBoolean(@NotNull Map map, @NotNull String key) {
        Object value = map.get(key);
        return value == null ? null : Boolean.valueOf(value.toString());
    }

    public static Double getDouble(@NotNull Map map, @NotNull String key) {
        Object value = map.get(key);
        return value == null ? null : Double.valueOf(value.toString());
    }

    public static Long getLong(@NotNull Map map, @NotNull String key) {
        Object value = map.get(key);
        return value == null ? null : Long.valueOf(value.toString());
    }

    public static Integer getInteger(@NotNull Map map, @NotNull String key) {
        Object value = map.get(key);
        return value == null ? null : Integer.valueOf(value.toString());
    }

    @NotNull
    public static List getListOrEmpty(@NotNull Map map, @NotNull String key) {
        Object value = map.get(key);
        return value instanceof List ? (List) value : Collections.emptyList();
    }

    @NotNull
    public static Map getMapOrValue(@NotNull Map map, @NotNull String key) {
        Object value = map.get(key);
        return value instanceof Map ? (Map) value : value != null ? Collections.singletonMap("value", value) : Collections.emptyMap();
    }

    @NotNull
    public static Map getMapOrEmpty(Map map, String key) {
        Object value = map.get(key);
        return value instanceof Map ? (Map) value : Collections.emptyMap();
    }

    @Nullable
    public static Map getMap(Map map, String key) {
        Object value = map.get(key);
        return value instanceof Map ? (Map) value : null;
    }
}