/**
* INTERNAL: Return if the expression is equal to the other. This is used to allow dynamic
* expression's SQL to be cached.
*/
public boolean equals(Object object) {
if (this == object) {
return true;
}
if (!super.equals(object)) {
return false;
}
QueryKeyExpression expression = (QueryKeyExpression) object;
// Return false for anyOf expressions, as equality is unknown.
if (shouldQueryToManyRelationship() || expression.shouldQueryToManyRelationship()) {
return false;
}
return ((getName() == expression.getName())
|| ((getName() != null) && getName().equals(expression.getName())));
}
public QueryKeyExpression existingDerivedExpressionNamed(String attributeName) {
if (this.derivedExpressions == null) {
return null;
}
List<Expression> derivedExpressionsCopy;
synchronized (this) {
derivedExpressionsCopy = new ArrayList(this.derivedExpressions);
}
for (Expression derivedExpression : derivedExpressionsCopy) {
QueryKeyExpression exp = (QueryKeyExpression) derivedExpression;
if (exp.getName().equals(attributeName)) {
return exp;
}
}
return null;
}
/** INTERNAL: Return if the attribute is specified for batch reading. */
public boolean isAttributeBatchRead(String attributeName) {
if (!hasBatchReadAttributes()) {
return false;
}
Vector batchReadAttributeExpressions = getBatchReadAttributeExpressions();
int size = batchReadAttributeExpressions.size();
for (int index = 0; index < size; index++) {
QueryKeyExpression expression = (QueryKeyExpression) batchReadAttributeExpressions.get(index);
while (!expression.getBaseExpression().isExpressionBuilder()) {
expression = (QueryKeyExpression) expression.getBaseExpression();
}
if (expression.getName().equals(attributeName)) {
return true;
}
}
return false;
}