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package org.apache.tapestry.contrib.jdbc; |
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import java.sql.Connection; |
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import java.sql.SQLException; |
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import java.sql.Timestamp; |
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import java.util.ArrayList; |
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import java.util.Calendar; |
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import java.util.Date; |
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import java.util.List; |
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public class StatementAssembly |
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{ |
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public static final String SEP = ", "; |
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private static final String NULL = "NULL"; |
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private StringBuffer _buffer = new StringBuffer(); |
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private List _parameters; |
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private int _lineLength; |
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private int _maxLineLength = 80; |
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private int _indent = 5; |
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public StatementAssembly() |
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{ |
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} |
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public StatementAssembly(int maxLineLength, int indent) |
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{ |
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_maxLineLength = maxLineLength; |
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_indent = indent; |
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} |
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public void clear() |
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{ |
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_buffer.setLength(0); |
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_lineLength = 0; |
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if (_parameters != null) |
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_parameters.clear(); |
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} |
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public int getMaxLineLength() |
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{ |
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return _maxLineLength; |
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} |
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public int getIndent() |
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{ |
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return _indent; |
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} |
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public void add(String text) |
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{ |
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int textLength; |
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textLength = text.length(); |
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if (_lineLength + textLength > _maxLineLength) |
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{ |
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_buffer.append('\n'); |
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for (int i = 0; i < _indent; i++) |
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_buffer.append(' '); |
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_lineLength = _indent; |
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} |
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_buffer.append(text); |
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_lineLength += textLength; |
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} |
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public void add(short value) |
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{ |
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add(Short.toString(value)); |
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} |
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public void add(int value) |
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{ |
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add(Integer.toString(value)); |
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} |
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public void add(long value) |
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{ |
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add(Long.toString(value)); |
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} |
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public void add(float value) |
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{ |
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add(Float.toString(value)); |
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} |
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public void add(double value) |
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{ |
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add(Double.toString(value)); |
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} |
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public void addParameter(Date date) |
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{ |
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if (date == null) |
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{ |
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add("NULL"); |
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return; |
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} |
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Calendar calendar = Calendar.getInstance(); |
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calendar.setTime(date); |
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calendar.set(Calendar.MILLISECOND, 0); |
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Date adjusted = calendar.getTime(); |
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Timestamp timestamp = new Timestamp(adjusted.getTime()); |
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addParameter(timestamp); |
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} |
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public void addSep(String text) |
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{ |
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_buffer.append(text); |
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_lineLength += text.length(); |
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} |
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public void newLine() |
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{ |
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if (_buffer.length() != 0) |
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_buffer.append('\n'); |
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_lineLength = 0; |
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} |
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public void newLine(String text) |
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{ |
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if (_buffer.length() != 0) |
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_buffer.append('\n'); |
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_buffer.append(text); |
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_lineLength = text.length(); |
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} |
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public void addList(String[] items, String separator) |
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{ |
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for (int i = 0; i < items.length; i++) |
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{ |
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if (i > 0) |
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addSep(separator); |
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add(items[i]); |
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} |
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} |
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public void addParameterList(int[] items, String separator) |
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for (int i = 0; i < items.length; i++) |
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if (i > 0) |
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addSep(separator); |
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addParameter(items[i]); |
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} |
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} |
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public void addParameterList(Integer[] items, String separator) |
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for (int i = 0; i < items.length; i++) |
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if (i > 0) |
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addSep(separator); |
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addParameter(items[i]); |
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} |
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} |
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public void addParameterList(long[] items, String separator) |
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for (int i = 0; i < items.length; i++) |
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{ |
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if (i > 0) |
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addSep(separator); |
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addParameter(items[i]); |
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} |
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} |
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public void addParameterList(Long[] items, String separator) |
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for (int i = 0; i < items.length; i++) |
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if (i > 0) |
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addSep(separator); |
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addParameter(items[i]); |
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} |
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} |
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public void addParameterList(String[] items, String separator) |
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for (int i = 0; i < items.length; i++) |
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{ |
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if (i > 0) |
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addSep(separator); |
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addParameter(items[i]); |
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} |
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} |
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public void addParameterList(double[] items, String separator) |
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for (int i = 0; i < items.length; i++) |
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{ |
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if (i > 0) |
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addSep(separator); |
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addParameter(items[i]); |
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} |
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} |
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public void addParameter(Object value) |
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{ |
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if (value == null) |
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add(NULL); |
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else |
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addParameter(new ObjectParameter(value)); |
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} |
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public void addParameter(Timestamp timestamp) |
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{ |
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if (timestamp == null) |
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add(NULL); |
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else |
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addParameter(new TimestampParameter(timestamp)); |
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} |
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public void addParameter(String value) |
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{ |
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if (value == null) |
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add(NULL); |
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else |
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addParameter(new StringParameter(value)); |
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} |
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public void addParameter(int value) |
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{ |
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addParameter(new IntegerParameter(value)); |
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} |
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public void addParameter(Integer value) |
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{ |
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if (value == null) |
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add(NULL); |
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else |
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addParameter(value.intValue()); |
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} |
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public void addParameter(long value) |
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{ |
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addParameter(new LongParameter(value)); |
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} |
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public void addParameter(Long value) |
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{ |
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if (value == null) |
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add(NULL); |
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else |
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addParameter(value.longValue()); |
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} |
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public void addParameter(float value) |
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{ |
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addParameter(new FloatParameter(value)); |
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} |
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public void addParameter(Float value) |
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{ |
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if (value == null) |
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add(NULL); |
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else |
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addParameter(value.floatValue()); |
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} |
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public void addParameter(double value) |
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{ |
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addParameter(new DoubleParameter(value)); |
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} |
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public void addParameter(Double value) |
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{ |
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if (value == null) |
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add(NULL); |
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else |
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addParameter(value.doubleValue()); |
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} |
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public void addParameter(short value) |
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{ |
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addParameter(new ShortParameter(value)); |
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} |
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public void addParameter(Short value) |
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{ |
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if (value == null) |
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add(NULL); |
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else |
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addParameter(value.shortValue()); |
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} |
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public void addParameter(boolean value) |
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{ |
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addParameter(value ? BooleanParameter.TRUE : BooleanParameter.FALSE); |
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} |
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public void addParameter(Boolean value) |
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{ |
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if (value == null) |
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add(NULL); |
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else |
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addParameter(value.booleanValue()); |
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} |
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private void addParameter(IParameter parameter) |
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{ |
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if (_parameters == null) |
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_parameters = new ArrayList(); |
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_parameters.add(parameter); |
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add("?"); |
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} |
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public IStatement createStatement(Connection connection) throws SQLException |
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{ |
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String sql = _buffer.toString(); |
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if (_parameters == null || _parameters.isEmpty()) |
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return new SimpleStatement(sql, connection); |
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return new ParameterizedStatement(sql, connection, _parameters); |
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} |
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public String toString() |
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{ |
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StringBuffer buffer = new StringBuffer("StatementAssembly@"); |
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buffer.append(Integer.toHexString(hashCode())); |
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buffer.append("[SQL=\n<"); |
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buffer.append(_buffer); |
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buffer.append("\n>"); |
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if (_parameters != null) |
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{ |
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int count = _parameters.size(); |
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for (int i = 0; i < count; i++) |
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{ |
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Object parameter = _parameters.get(i); |
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buffer.append(" ?"); |
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buffer.append(i + 1); |
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buffer.append('='); |
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buffer.append(parameter); |
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} |
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} |
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buffer.append(']'); |
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return buffer.toString(); |
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} |
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} |