# AutoPrimitiveTarget.java

    /*
     * Copyright 2011, 2012 Odysseus Software GmbH
     *
     * 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 org.apache.synapse.commons.staxon.core.json.stream.util;

    import java.io.IOException;
    import java.math.BigDecimal;
    import java.util.regex.Pattern;

    import org.apache.synapse.commons.staxon.core.json.stream.JsonStreamTarget;

    /**
     * Target-filter to auto-convert string values to primitive (boolean, number, null) values.
     */
    public class AutoPrimitiveTarget extends StreamTargetDelegate {
        private final Pattern number = Pattern.compile("^-?(0|[1-9][0-9]*)(\\.[0-9]+)?([eE][+-]?[0-9]+)?$");
        private final boolean convertAttributes;

        private String lastName;

        public AutoPrimitiveTarget(JsonStreamTarget delegate, boolean convertAttributes) {
            super(delegate);
            this.convertAttributes = convertAttributes;
        }

        @Override
        public void name(String name) throws IOException {
            lastName = name;
            super.name(name);
        }

        @Override
        public void value(Object value) throws IOException {
            if (value instanceof String && (convertAttributes || !lastName.startsWith("@"))) {
                if ("true".equals(value)) {
                    super.value(Boolean.TRUE);
                } else if ("false".equals(value)) {
                    super.value(Boolean.FALSE);
                } else if ("null".equals(value)) {
                    super.value(null);
                } else if (number.matcher(value.toString()).matches()) {
                    super.value(new BigDecimal(value.toString()));
                } else {
                    super.value(value);
                }
            } else {
                super.value(value);
            }
        }
    }