114 lines
2.7 KiB
Java
114 lines
2.7 KiB
Java
package com.Acrobot.Breeze.Database;
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import java.util.*;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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/**
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* A class representing a Row in SQL query
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*
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* @author Acrobot
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*/
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public class Row {
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private List<String> keys = new ArrayList<String>();
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private Map<String, String> values = new HashMap<String, String>();
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/**
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* Puts a name/value pair inside the row
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*
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* @param name Item's name
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* @param value Item's value
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*/
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public void put(String name, String value) {
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if (!values.containsKey(name)) {
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keys.add(name);
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}
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values.put(name, value);
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}
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/**
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* Gets a value from name
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*
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* @param name Value's name
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* @return Value
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*/
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public String get(String name) {
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return values.get(name);
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}
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/**
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* Gets a value from index
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*
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* @param index Value's index
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* @return Value
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*/
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public String get(int index) {
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String key = keys.get(index);
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return values.get(key);
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}
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/**
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* Returns value's key
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*
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* @param index Value's index
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* @return Value's key
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*/
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public String getKey(int index) {
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return keys.get(index);
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}
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/**
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* Returns all values
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*
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* @return All values in this row
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*/
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public Collection<String> getValues() {
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return values.values();
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}
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/**
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* Returns the keys with values
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*
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* @return Key and value pairs
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*/
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public Map<String, String> getKeysAndValues() {
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return values;
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}
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/**
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* Returns this row as a class
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*
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* @param clazz Class which will be represented
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* @return Representation
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*/
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public <T> T getAsClass(Class<T> clazz) {
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T object;
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try {
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object = clazz.newInstance();
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} catch (InstantiationException | IllegalAccessException e) {
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Logger.getLogger("Row").log(Level.SEVERE, "Error while creating new instance of class " + clazz.getName() + " for row", e);
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return null;
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}
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for (Map.Entry<String, String> value : values.entrySet()) {
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try {
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clazz.getDeclaredField(value.getKey()).set(object, value.getValue());
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} catch (NoSuchFieldException | IllegalAccessException ex) {
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Logger.getLogger("Row").log(Level.SEVERE, "Error while setting field " + value.getKey() + " to " + value.getValue() + " of class " + clazz.getName(), ex);
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}
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}
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return object;
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}
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/**
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* Returns the number of values inside the row
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*
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* @return number of values
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*/
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public int getSize() {
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return values.size();
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}
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} |