io.wcm.tooling.commons.contentpackagebuilder.ValueConverter.java Source code

Introduction

Here is the source code for io.wcm.tooling.commons.contentpackagebuilder.ValueConverter.java

Source

/*
 * #%L
 * wcm.io
 * %%
 * Copyright (C) 2015 wcm.io
 * %%
 * 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.
 * #L%
 */
package io.wcm.tooling.commons.contentpackagebuilder;

import java.math.BigDecimal;
import java.util.Calendar;
import java.util.Date;

import org.apache.commons.lang3.ArrayUtils;
import org.apache.commons.lang3.StringUtils;
import org.apache.jackrabbit.util.ISO8601;

/**
 * Converts an value to string for a content property in XML including type prefix.
 */
final class ValueConverter {

    static final String PN_PRIVILEGES = "rep:privileges";

    /**
     * Converts an object to a string representation.
     * Supported are String, Boolean, Integer, Long, Double, BigDecimal, Date, Calendar and arrays of them.
     * @param value value
     * @return Converted value
     */
    public String toString(String propertyName, Object value) {
        if (value == null) {
            return "";
        } else if (value instanceof boolean[]) {
            return arrayToString(propertyName, ArrayUtils.toObject((boolean[]) value));
        } else if (value instanceof int[]) {
            return arrayToString(propertyName, ArrayUtils.toObject((int[]) value));
        } else if (value instanceof long[]) {
            return arrayToString(propertyName, ArrayUtils.toObject((long[]) value));
        } else if (value instanceof double[]) {
            return arrayToString(propertyName, ArrayUtils.toObject((double[]) value));
        } else if (value.getClass().isArray()) {
            return arrayToString(propertyName, (Object[]) value);
        } else {
            return getTypePrefix(propertyName, value) + singleObjectToString(value);
        }
    }

    private <T> String arrayToString(String propertyName, T[] values) {
        if (values.length == 0) {
            return "";
        } else {
            String typePrefix = getTypePrefix(propertyName, values[0]);
            StringBuilder arrayString = new StringBuilder();
            arrayString.append("[");
            for (int i = 0; i < values.length; i++) {
                if (i > 0) {
                    arrayString.append(",");
                }
                String convertedArrayValue = singleObjectToString(values[i]);
                arrayString.append(escapeSpecialCharsInArray(convertedArrayValue));
            }
            arrayString.append("]");
            String stringValue = arrayString.toString();
            return typePrefix + stringValue;
        }
    }

    private String escapeSpecialCharsInArray(String value) {
        return StringUtils.replace(StringUtils.replace(value, "\\", "\\\\"), ",", "\\,");
    }

    private String singleObjectToString(Object value) {
        if (value == null) {
            return "";
        }
        if (value instanceof String) {
            return escapeStringValue((String) value);
        }
        if (value instanceof Boolean) {
            return ((Boolean) value).toString();
        }
        if (value instanceof Integer || value instanceof Long) {
            return Long.toString(((Number) value).longValue());
        }
        if (value instanceof Double) {
            return Double.toString(((Double) value).doubleValue());
        }
        if (value instanceof BigDecimal) {
            return Double.toString(((BigDecimal) value).doubleValue());
        }
        if (value instanceof Date) {
            Calendar calendar = Calendar.getInstance();
            calendar.setTime((Date) value);
            return ISO8601.format(calendar);
        }
        if (value instanceof Calendar) {
            return ISO8601.format((Calendar) value);
        }
        throw new IllegalArgumentException("Type not supported: " + value.getClass().getName());
    }

    private String escapeStringValue(String value) {
        if (StringUtils.startsWith(value, "{")) {
            return "\\" + value;
        }
        return value;
    }

    private String getTypePrefix(String propertyName, Object value) {
        if (value instanceof Boolean) {
            return "{Boolean}";
        } else if (value instanceof Integer || value instanceof Long) {
            return "{Long}";
        } else if (value instanceof Number || value instanceof BigDecimal) {
            return "{Decimal}";
        } else if (value instanceof Date || value instanceof Calendar) {
            return "{Date}";
        } else if (StringUtils.equals(propertyName, PN_PRIVILEGES)) {
            return "{Name}";
        }
        return "";
    }

}