Example usage for java.lang String hashCode

Introduction

In this page you can find the example usage for java.lang String hashCode.

Prototype

public int hashCode()

Source Link

Document

Returns a hash code for this string.

Usage

From source file:net.sourceforge.processdash.data.util.ResultSet.java

private static String fixupName(String name) {
    return "anonymousChart" + name.hashCode();
}

From source file:com.wuman.androidimageloader.ImageLoader.java

private static String urlToKey(String url) {
    return Integer.toHexString(url.hashCode());
}

From source file:ca.oson.json.util.ObjectUtil.java

public static int hashCode(Object obj, Class valueType) {
    int hash = 7;

    try {//from   ww w .j a va  2 s  . c o m
        if (obj == null) {
            hash = valueType.hashCode();
        } else {
            hash = obj.hashCode();
        }

    } catch (Exception ex) {
    }

    if (obj != null && Math.abs(hash) < 100) {
        String str = obj.toString();
        hash += str.hashCode();
    }

    return hash;
}

From source file:com.amazon.carbonado.layout.LayoutFactory.java

/**
 * Returns an annotation hash code using a algorithm similar to the
 * default. The difference is in the handling of class and enum values. The
 * name is chosen for the hash code component instead of the instance
 * because it is stable between invocations of the JVM.
 *//*from  w w w . j a  v a 2  s . com*/
private static int annHashCode(Annotation ann) {
    int hash = 0;

    Method[] methods = ann.getClass().getDeclaredMethods();
    for (Method m : methods) {
        if (m.getReturnType() == null || m.getReturnType() == void.class) {
            continue;
        }
        if (m.getParameterTypes().length != 0) {
            continue;
        }

        String name = m.getName();
        if (name.equals("hashCode") || name.equals("toString") || name.equals("annotationType")) {
            continue;
        }

        Object value;
        try {
            value = m.invoke(ann);
        } catch (InvocationTargetException e) {
            continue;
        } catch (IllegalAccessException e) {
            continue;
        }

        hash += (127 * name.hashCode()) ^ annValueHashCode(value);
    }

    return hash;
}

From source file:org.esupportail.portlet.filemanager.utils.MemoryMapPathEncodingUtils.java

public String encodeDir(String path) {
    String encPath = PREFIX_CODE + path.hashCode();
    if (!idsPathes.containsKey(encPath))
        idsPathes.put(encPath, path);//  ww  w .ja v  a2 s.  c  om
    return encPath;
}

From source file:com.microsoft.Malmo.Utils.TextureHelper.java

public static void glBindTexture(int target, int texture) {
    // The Minecraft render code is selecting a texture.
    // If we are producing a colour map, this is our opportunity to activate our special fragment shader,
    // which will ignore the texture and use a solid colour - either the colour we pass in, or a colour based
    // on the texture coords (if using the block texture atlas).
    if (isProducingColourMap && colourmapFrame) {
        if (shaderID != -1) {
            // Have we encountered this texture before?
            Integer col = texturesToColours.get(texture);
            if (col == null) {
                // No - are we drawing an entity?
                if (currentEntity != null) {
                    // Has the user requested a specific mapping?
                    if (idealMobColours != null) {
                        // Yes, in which case use black unless a mapping is found:
                        col = 0;/*from w  ww  .j a v a  2s  .  co  m*/
                        String entName = EntityList.getKey(currentEntity).toString();
                        for (String ent : idealMobColours.keySet()) {
                            if (entName.equals(ent)) {
                                col = idealMobColours.get(ent);
                            }
                        }
                    } else {
                        // Provide a default mapping from entity to colour
                        String ent = EntityList.getEntityString(currentEntity);
                        if (ent == null) // Happens if, for example, currentEntity is of type EntityOtherPlayerMP.
                            ent = currentEntity.getClass().getName();
                        col = (ent.hashCode()) % 0xffffff;
                    }
                    texturesToColours.put(texture, col);
                } else {
                    // Not drawing an entity. Check the misc mappings:
                    for (String resID : miscTexturesToColours.keySet()) {
                        ITextureObject tex = Minecraft.getMinecraft().getTextureManager()
                                .getTexture(new ResourceLocation(resID));
                        if (tex != null && tex.getGlTextureId() == texture) {
                            // Match
                            col = miscTexturesToColours.get(resID);
                        }
                    }
                    if (col == null) {
                        // Still no match.
                        // Finally, see if this is the block atlas texture:
                        ITextureObject blockatlas = Minecraft.getMinecraft().getTextureManager()
                                .getTexture(new ResourceLocation("textures/atlas/blocks.png"));
                        if (blockatlas != null && blockatlas.getGlTextureId() == texture) {
                            col = -1;
                        }
                    }
                    if (col != null) // Put this in the map for easy access next time.
                        texturesToColours.put(texture, col);
                }
            }
            if (col != null) {
                OpenGlHelper.glUseProgram(shaderID);
                int entColUniformLocR = OpenGlHelper.glGetUniformLocation(shaderID, "entityColourR");
                int entColUniformLocG = OpenGlHelper.glGetUniformLocation(shaderID, "entityColourG");
                int entColUniformLocB = OpenGlHelper.glGetUniformLocation(shaderID, "entityColourB");
                if (entColUniformLocR != -1 && entColUniformLocG != -1 && entColUniformLocB != -1) {
                    OpenGlHelper.glUniform1i(entColUniformLocR, col != -1 ? (col >> 16) & 0xff : -1);
                    OpenGlHelper.glUniform1i(entColUniformLocG, col != -1 ? (col >> 8) & 0xff : -1);
                    OpenGlHelper.glUniform1i(entColUniformLocB, col != -1 ? col & 0xff : -1);
                }
            } else
                OpenGlHelper.glUseProgram(0);
        }
    }
    // Finally, pass call on to OpenGL:
    GL11.glBindTexture(target, texture);
}

From source file:com.cloudera.recordbreaker.hive.CSVSerDe.java

GenericData.Record deserializeRowBlob(Writable blob) {
    String rowStr = ((Text) blob).toString();
    if (("" + rowStr.hashCode()).compareTo(headerRowHash) == 0) {
        return null;
    }// w w  w  .jav a2 s .c om
    return rowParser.parseRow(rowStr);
}

From source file:org.arrow.runtime.meta.MapProcessMetaDataRepository.java

/**
 * {@inheritDoc}
 */
@Override
public ProcessMetaData findById(String processId) {
    return MAP.get(processId.hashCode());
}

From source file:net.sf.ehcache.constructs.concurrent.ConcurrencyUtilTest.java

/**
 * Tests that stripes are evently distributed
 *///  ww  w  .j  a  va  2s.  c  o m
public void testStripingDistribution() {

    int[] lockIndexes = new int[2048];
    for (int i = 0; i < 20480 * 3; i++) {
        String key = "" + i * 3 / 2 + i;
        key += key.hashCode();
        int lock = ConcurrencyUtil.selectLock(key, 2048);
        lockIndexes[lock]++;
    }

    int outliers = 0;
    for (int i = 0; i < 2048; i++) {
        if (20 <= lockIndexes[i] && lockIndexes[i] <= 40) {
            continue;
        }
        LOG.info(i + ": " + lockIndexes[i]);
        outliers++;
    }
    assertTrue(outliers <= 128);
}

From source file:ColorHelper.java

public int getColorIndexFor(String ident) {
    return Math.abs(ident.hashCode()) % staticColors.size();
}