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org.activiti.engine.impl.event.logger.handler.VariableEventHandler Maven / Gradle / Ivy
package org.activiti.engine.impl.event.logger.handler;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.activiti.engine.delegate.event.ActivitiVariableEvent;
import org.activiti.engine.impl.variable.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;
/**
*/
public abstract class VariableEventHandler extends AbstractDatabaseEventLoggerEventHandler {
private static final Logger logger = LoggerFactory.getLogger(VariableEventHandler.class);
public static final String TYPE_BOOLEAN = "boolean";
public static final String TYPE_STRING = "string";
public static final String TYPE_SHORT = "short";
public static final String TYPE_INTEGER = "integer";
public static final String TYPE_DOUBLE = "double";
public static final String TYPE_LONG = "long";
public static final String TYPE_DATE = "date";
public static final String TYPE_UUID = "uuid";
public static final String TYPE_JSON = "json";
protected Map createData(ActivitiVariableEvent variableEvent) {
Map data = new HashMap();
putInMapIfNotNull(data, Fields.NAME, variableEvent.getVariableName());
putInMapIfNotNull(data, Fields.PROCESS_DEFINITION_ID, variableEvent.getProcessDefinitionId());
putInMapIfNotNull(data, Fields.PROCESS_INSTANCE_ID, variableEvent.getProcessInstanceId());
putInMapIfNotNull(data, Fields.EXECUTION_ID, variableEvent.getExecutionId());
putInMapIfNotNull(data, Fields.VALUE, variableEvent.getVariableValue());
VariableType variableType = variableEvent.getVariableType();
if (variableType instanceof BooleanType) {
putInMapIfNotNull(data, Fields.VALUE_BOOLEAN, (Boolean) variableEvent.getVariableValue());
putInMapIfNotNull(data, Fields.VALUE, variableEvent.getVariableValue());
putInMapIfNotNull(data, Fields.VARIABLE_TYPE, TYPE_BOOLEAN);
} else if (variableType instanceof StringType || variableType instanceof LongStringType) {
putInMapIfNotNull(data, Fields.VALUE_STRING, (String) variableEvent.getVariableValue());
putInMapIfNotNull(data, Fields.VARIABLE_TYPE, TYPE_STRING);
} else if (variableType instanceof ShortType) {
Short value = (Short) variableEvent.getVariableValue();
putInMapIfNotNull(data, Fields.VALUE_SHORT, value);
putInMapIfNotNull(data, Fields.VARIABLE_TYPE, TYPE_SHORT);
if (value != null) {
putInMapIfNotNull(data, Fields.VALUE_INTEGER, value.intValue());
putInMapIfNotNull(data, Fields.VALUE_LONG, value.longValue());
putInMapIfNotNull(data, Fields.VALUE_DOUBLE, value.doubleValue());
}
} else if (variableType instanceof IntegerType) {
Integer value = (Integer) variableEvent.getVariableValue();
putInMapIfNotNull(data, Fields.VALUE_INTEGER, value);
putInMapIfNotNull(data, Fields.VARIABLE_TYPE, TYPE_INTEGER);
if (value != null) {
putInMapIfNotNull(data, Fields.VALUE_LONG, value.longValue());
putInMapIfNotNull(data, Fields.VALUE_DOUBLE, value.doubleValue());
}
} else if (variableType instanceof LongType) {
Long value = (Long) variableEvent.getVariableValue();
putInMapIfNotNull(data, Fields.VALUE_LONG, value);
putInMapIfNotNull(data, Fields.VARIABLE_TYPE, TYPE_LONG);
if (value != null) {
putInMapIfNotNull(data, Fields.VALUE_DOUBLE, value.doubleValue());
}
} else if (variableType instanceof DoubleType) {
Double value = (Double) variableEvent.getVariableValue();
putInMapIfNotNull(data, Fields.VALUE_DOUBLE, value);
putInMapIfNotNull(data, Fields.VARIABLE_TYPE, TYPE_DOUBLE);
if (value != null) {
putInMapIfNotNull(data, Fields.VALUE_INTEGER, value.intValue());
putInMapIfNotNull(data, Fields.VALUE_LONG, value.longValue());
}
} else if (variableType instanceof DateType) {
Date value = (Date) variableEvent.getVariableValue();
putInMapIfNotNull(data, Fields.VALUE_DATE, value != null ? value.getTime() : null);
putInMapIfNotNull(data, Fields.VARIABLE_TYPE, TYPE_DATE);
} else if (variableType instanceof UUIDType) {
String value = null;
if (variableEvent.getVariableValue() instanceof UUID) {
value = ((UUID) variableEvent.getVariableValue()).toString();
} else {
value = (String) variableEvent.getVariableValue();
}
putInMapIfNotNull(data, Fields.VALUE_UUID, value);
putInMapIfNotNull(data, Fields.VALUE_STRING, value);
putInMapIfNotNull(data, Fields.VARIABLE_TYPE, TYPE_UUID);
} else if (variableType instanceof SerializableType || (variableEvent.getVariableValue() != null && (variableEvent.getVariableValue() instanceof Object))) {
// Last try: serialize it to json
ObjectMapper objectMapper = new ObjectMapper();
try {
String value = objectMapper.writeValueAsString(variableEvent.getVariableValue());
putInMapIfNotNull(data, Fields.VALUE_JSON, value);
putInMapIfNotNull(data, Fields.VARIABLE_TYPE, TYPE_JSON);
putInMapIfNotNull(data, Fields.VALUE, value);
} catch (JsonProcessingException e) {
// Nothing to do about it
logger.debug("Could not serialize variable value " + variableEvent.getVariableValue());
}
}
return data;
}
}
