jetbrick.template.runtime.buildin.JetMethods Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of jetbrick-template Show documentation
Next generation template engine for Java.
The newest version!
/**
 * Copyright 2013-2016 Guoqiang Chen, Shanghai, China. All rights reserved.
 *
 *   Author: Guoqiang Chen
 *    Email: [email protected]
 *   WebURL: https://github.com/subchen
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package jetbrick.template.runtime.buildin;

import java.text.DecimalFormat;
import java.util.*;
import jetbrick.util.*;

public final class JetMethods {

    //---- type cast -------------------------------------------------------
    public static Boolean asBoolean(Object value) {
        if (value == null) {
            return null;
        }
        if (value instanceof Boolean) {
            return (Boolean) value;
        }

        value = value.toString().toLowerCase();
        if ("true".equals(value)) return Boolean.TRUE;
        if ("yes".equals(value)) return Boolean.TRUE;
        if ("on".equals(value)) return Boolean.TRUE;
        if ("t".equals(value)) return Boolean.TRUE;
        if ("y".equals(value)) return Boolean.TRUE;
        if ("1".equals(value)) return Boolean.TRUE;
        return Boolean.FALSE;
    }

    public static Integer asInt(Object value) {
        if (value == null) {
            return null;
        }
        if (value instanceof Number) {
            return ((Number) value).intValue();
        }
        return Integer.valueOf(value.toString());
    }

    public static Long asLong(Object value) {
        if (value == null) {
            return null;
        }
        if (value instanceof Number) {
            return ((Number) value).longValue();
        }
        return Long.valueOf(value.toString());
    }

    public static Float asFloat(Object value) {
        if (value == null) {
            return null;
        }
        if (value instanceof Number) {
            return ((Number) value).floatValue();
        }
        return Float.valueOf(value.toString());
    }

    public static Double asDouble(Object value) {
        if (value == null) {
            return null;
        }
        if (value instanceof Number) {
            return ((Number) value).doubleValue();
        }
        return Double.valueOf(value.toString());
    }

    public static Date asDate(String value) {
        return DateUtils.parse(value);
    }

    public static Date asDate(String value, String format) {
        return DateUtils.parse(value, format);
    }

    public static  List asList(Collection values) {
        if (values == null) {
            return null;
        }
        if (values instanceof List) {
            return (List) values;
        }
        return new ArrayList(values);
    }

    public static List