org.camunda.bpm.ext.sdk.impl.variables.AbstractPrimitiveValueSerializer.java Source code

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Here is the source code for org.camunda.bpm.ext.sdk.impl.variables.AbstractPrimitiveValueSerializer.java

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/* 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.camunda.bpm.ext.sdk.impl.variables;

import static org.camunda.bpm.ext.sdk.impl.variables.ValueSerializers.*;

import org.camunda.bpm.engine.impl.core.variable.value.UntypedValueImpl;
import org.camunda.bpm.engine.variable.type.PrimitiveValueType;
import org.camunda.bpm.engine.variable.value.PrimitiveValue;
import org.camunda.bpm.engine.variable.value.TypedValue;
import org.camunda.bpm.ext.sdk.CamundaClientException;

import com.fasterxml.jackson.databind.ObjectMapper;

/**
 * @author Daniel Meyer
 *
 */
public abstract class AbstractPrimitiveValueSerializer<T extends PrimitiveValue<?>> implements ValueSerializer<T> {

    protected PrimitiveValueType type;

    public AbstractPrimitiveValueSerializer(PrimitiveValueType type) {
        this.type = type;
    }

    public String getTypeName() {
        return type.getName();
    }

    public boolean canSerialize(UntypedValueImpl value) {
        if (value.getValue() == null) {
            return false;
        } else {
            return type.getJavaType().isAssignableFrom(value.getValue().getClass());
        }
    }

    public TypedValue convertToTypedValue(UntypedValueImpl untyped) {
        return type.createValue(untyped.getValue(), null);
    }

    @SuppressWarnings("unchecked")
    public T deserializeValue(TypedValueDto object, ObjectMapper objectMapper) {
        Object value = object.getValue();

        Class<?> javaType = type.getJavaType();
        Object mappedValue = null;
        try {
            if (value != null) {
                if (javaType.isAssignableFrom(value.getClass())) {
                    mappedValue = value;
                } else {
                    // use jackson to map the value to the requested java type
                    mappedValue = objectMapper.readValue("\"" + value + "\"", javaType);
                }
            }
            return (T) type.createValue(mappedValue, object.getValueInfo());
        } catch (Exception e) {
            throw new CamundaClientException(
                    "Could not deserialize value of type " + object.getType() + ", value: " + value, e);
        }
    }

    public TypedValueDto serializeValue(T value, ObjectMapper objectMapper) {
        TypedValueDto typedValueDto = new TypedValueDto();
        typedValueDto.setType(toRestApiTypeName(type.getName()));
        typedValueDto.setValue(value.getValue());
        typedValueDto.setValueInfo(type.getValueInfo(value));
        return typedValueDto;
    }

}