//$Id: QueryKey.java 9636 2006-03-16 14:14:48Z max.andersen@jboss.com $
package org.hibernate.cache;
import java.io.Serializable;
import java.util.Map;
import java.util.Set;
import org.hibernate.EntityMode;
import org.hibernate.engine.QueryParameters;
import org.hibernate.engine.RowSelection;
import org.hibernate.transform.ResultTransformer;
import org.hibernate.type.Type;
import org.hibernate.util.EqualsHelper;
/**
* A key that identifies a particular query with bound parameter values
* @author Gavin King
*/
public class QueryKey implements Serializable {
private final String sqlQueryString;
private final Type[] types;
private final Object[] values;
private final Integer firstRow;
private final Integer maxRows;
private final Map namedParameters;
private final EntityMode entityMode;
private final Set filters;
private final int hashCode;
// the user provided resulttransformer, not the one used with "select new". Here to avoid mangling transformed/non-transformed results.
private final ResultTransformer customTransformer;
public QueryKey(String queryString, QueryParameters queryParameters, Set filters, EntityMode entityMode) {
this.sqlQueryString = queryString;
this.types = queryParameters.getPositionalParameterTypes();
this.values = queryParameters.getPositionalParameterValues();
RowSelection selection = queryParameters.getRowSelection();
if (selection!=null) {
firstRow = selection.getFirstRow();
maxRows = selection.getMaxRows();
}
else {
firstRow = null;
maxRows = null;
}
this.namedParameters = queryParameters.getNamedParameters();
this.entityMode = entityMode;
this.filters = filters;
this.customTransformer = queryParameters.getResultTransformer();
this.hashCode = getHashCode();
}
public boolean equals(Object other) {
QueryKey that = (QueryKey) other;
if ( !sqlQueryString.equals(that.sqlQueryString) ) return false;
if ( !EqualsHelper.equals(firstRow, that.firstRow) || !EqualsHelper.equals(maxRows, that.maxRows) ) return false;
if ( !EqualsHelper.equals(customTransformer, that.customTransformer) ) return false;
if (types==null) {
if (that.types!=null) return false;
}
else {
if (that.types==null) return false;
if ( types.length!=that.types.length ) return false;
for ( int i=0; i<types.length; i++ ) {
if ( types[i].getReturnedClass() != that.types[i].getReturnedClass() ) return false;
if ( !types[i].isEqual( values[i], that.values[i], entityMode ) ) return false;
}
}
if ( !EqualsHelper.equals(filters, that.filters) ) return false;
if ( !EqualsHelper.equals(namedParameters, that.namedParameters) ) return false;
return true;
}
public int hashCode() {
return hashCode;
}
private int getHashCode() {
int result = 13;
result = 37 * result + ( firstRow==null ? 0 : firstRow.hashCode() );
result = 37 * result + ( maxRows==null ? 0 : maxRows.hashCode() );
for ( int i=0; i<values.length; i++ ) {
result = 37 * result + ( values[i]==null ? 0 : types[i].getHashCode( values[i], entityMode ) );
}
result = 37 * result + ( namedParameters==null ? 0 : namedParameters.hashCode() );
result = 37 * result + ( filters==null ? 0 : filters.hashCode() );
result = 37 * result + ( customTransformer==null ? 0 : customTransformer.hashCode() );
result = 37 * result + sqlQueryString.hashCode();
return result;
}
public String toString() {
StringBuffer buf = new StringBuffer()
.append("sql: ")
.append(sqlQueryString);
if (values!=null) {
buf.append("; parameters: ");
for (int i=0; i<values.length; i++) {
buf.append( values[i] )
.append(", ");
}
}
if (namedParameters!=null) {
buf.append("; named parameters: ")
.append(namedParameters);
}
if (filters!=null) {
buf.append("; filters: ")
.append(filters);
}
if (firstRow!=null) buf.append("; first row: ").append(firstRow);
if (maxRows!=null) buf.append("; max rows: ").append(maxRows);
if (customTransformer!=null) buf.append("; transformer: ").append(customTransformer);
return buf.toString();
}
}