Java Map Remove removeValue(Map subject, String property, Map value, boolean propertyIsArray)

Description

remove Value

License

Open Source License

Declaration

static void removeValue(Map<String, Object> subject, String property, Map<String, Object> value,
            boolean propertyIsArray) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.util.ArrayList;

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

public class Main {
    /**/*from ww  w .j  a v  a2 s  .co m*/
     * Removes a value from a subject.
     *
     * @param subject
     *            the subject.
     * @param property
     *            the property that relates the value to the subject.
     * @param value
     *            the value to remove.
     * @param [options] the options to use: [propertyIsArray] true if the
     *        property is always an array, false if not (default: false).
     */
    static void removeValue(Map<String, Object> subject, String property, Map<String, Object> value) {
        removeValue(subject, property, value, false);
    }

    static void removeValue(Map<String, Object> subject, String property, Map<String, Object> value,
            boolean propertyIsArray) {
        // filter out value
        final List<Object> values = new ArrayList<Object>();
        if (subject.get(property) instanceof List) {
            for (final Object e : ((List) subject.get(property))) {
                if (!(value.equals(e))) {
                    values.add(value);
                }
            }
        } else {
            if (!value.equals(subject.get(property))) {
                values.add(subject.get(property));
            }
        }

        if (values.size() == 0) {
            subject.remove(property);
        } else if (values.size() == 1 && !propertyIsArray) {
            subject.put(property, values.get(0));
        } else {
            subject.put(property, values);
        }
    }
}

Related

1. removeParentBeans(Map parentBeans, Map beans)
2. removePrivateColumns( Map contentValues)
3. removeRownum(List> rows)
4. removeTrailingNumber(Map names)
5. removeValue(final Map map, final Object key, final Object value)
6. removeValueFromAll(final Map map, final Object value)
7. removeValueList(final Map> map, final K key, final V value)
8. removeValuesFromMap(Map map, Collection removed)
9. removeVersionSelector( Map selector)